Aristotle, Telos, and the Good Life: What Human Flourishing Actually Means pt. 1
In the last three episodes, Matt Ehret argued that the history of progress is a contest between two competing visions of civilization: one that develops its internal capacities, and one that manages and depletes them. At the center of that argument was a framework introduced in Episode 11 — the open system and the closed system. That framework raised a question we deliberately set aside: what exactly is being opened or closed? What is the standard by which we judge whether a civilization is developing or declining?
Aristotle has an answer. And it begins with a question most modern philosophy has stopped asking: what is a human being for?
This episode works through three ideas. First: how Aristotle understands the relationship between activity and the good. Second: what he means by telos — the end or purpose internal to a form of life — and why it is grounded in nature rather than assigned from outside. Third: a challenge posed by Karl Popper that Part 2 must answer — whether any fixed account of human ends is compatible with an open society.
Drawing on Alasdair MacIntyre’s reading in After Virtue and Philippa Foot’s Natural Goodness, the episode traces what telos means, why it is grounded in nature, and why a critical distinction — between how we come to know things and what we fundamentally are — is essential before the argument can proceed. A key editorial note: Aristotle holds that the intellect begins without innate content (the tabula rasa of the De Anima). But that is a claim about how we come to know things — not a claim about what we are. MacIntyre’s entire defense of Aristotle turns on keeping those two levels separate.
The episode closes with Popper’s charge: that Aristotle’s account of fixed ends generates the intellectual architecture of the closed society. That charge is not answered here. It is posed as the question Part 2 must address.
Show Notes & Timestamps
• Open vs Closed Systems — 0:00
• Telos and Flourishing — 1:26
• Three Key Terms — 1:57
• Every Action Aims at a Good — 4:08
• MacIntyre on Virtue — 4:59
• Eudaimonia and the Virtues — 6:42
• Suspicion of Fixed Ends — 8:28
• Foot’s Natural Goodness — 9:38
• Tabula Rasa Clarified — 11:21
• Popper’s Closed Society Critique — 13:54
• Can Telos Stay Open? — 17:23
• Wrap Up and Part 2 Preview — 18:39
Key Concepts & Terms
Telos (TEL-os)
From the Greek, meaning end or purpose. According to MacIntyre’s reading of Aristotle, the telos of a thing is the end that is internal to its form of life — what it means for a thing of that kind to be functioning well. A telos is not a goal you choose. It is what you are oriented toward by virtue of what you are.
Eudaimonia (yoo-die-MOH-nee-ah)
Often translated as happiness, but more precisely: flourishing. For Aristotle, eudaimonia is the full realization of what human beings are capable of. MacIntyre argues that the virtues — courage, justice, temperance, practical wisdom — are not merely instrumental to eudaimonia but partly constitutive of it. Eudaimonia is a form of life you inhabit, not a feeling to be produced.
Phronesis (froh-NEE-sis)
Practical wisdom — the capacity to judge well in particular situations. Named and seeded in this episode; developed in depth in Part 2 and in the upcoming episode with Professor Atif Ansar, where it will do real analytical work.
Tabula rasa (TAB-yoo-lah RAH-sah)
Blank slate. Aristotle holds in the De Anima that the intellect begins without innate content. This episode draws a critical distinction: tabula rasa describes how we come to know things, not what we are. A blank slate in terms of knowledge is entirely compatible with a determinate natural form.
Fascinating Historical Insights
Aristotle’s opening move
Aristotle opens the Nicomachean Ethics not with a principle or a commandment but with an observation: every activity, every inquiry, every pursuit aims at some good. MacIntyre frames this as the foundational move of the Aristotelian tradition. Where Enlightenment moral philosophy begins from rules — what should I do, and why should I obey? — Aristotle begins from character: what kind of person should I become, and what does it mean for a human being to be living well?
MacIntyre’s diagnostic
MacIntyre argues in After Virtue that the shift from virtue to rule-following is the defining mark of what went wrong in modern ethics. Rules without a prior account of what human beings are for cannot carry the moral weight we ask of them. The virtues — on his reading of Aristotle — are not just means to a separate end. They are partly constitutive of what living well actually is.
Foot’s wolf
Philippa Foot’s Natural Goodness begins with a simple example: a wolf that cannot run is, in a perfectly straightforward sense, a bad wolf — not because we disapprove of it, but because it is failing to be what a wolf characteristically is and does. Foot extends this logic to human beings, grounding the evaluation in the natural form of life of the species. No theological premises required. No medieval framework. The claim that a living thing can fail to flourish is, on her account, a kind of factual claim.
Popper’s structural charge
Karl Popper’s argument in The Open Society and Its Enemies (1945) is not that Aristotle had authoritarian intentions. It is structural. Popper identifies three ideas he traces from Aristotle through Hegel: that we can only know a thing’s inner nature through its historical development; that development reveals a destiny present from the beginning; and that the drive to realize one’s essential nature becomes the fundamental category of political life. Together, on Popper’s reading, these generate the intellectual architecture of the closed society — a form of political authority that insulates itself from criticism by appealing to what history requires.
Resources & Further ReadingPrimary Sources
• Aristotle. Nicomachean Ethics. Trans. Roger Crisp. Cambridge University Press, 2000. The accessible reading copy used throughout this episode. Crisp’s translation is widely recommended for listeners new to Aristotle.
• Aristotle. Nicomachean Ethics. Trans. Robert C. Bartlett and Susan D. Collins. University of Chicago Press, 2011. The working scholarly reference. Bartlett and Collins hold closer to the Greek and supply detailed interpretive notes.
Works Discussed
• MacIntyre, Alasdair. After Virtue: A Study in Moral Theory. 3rd ed. University of Notre Dame Press, 2007. MacIntyre’s reading of Aristotle provides the central interpretive frame for this episode and Part 2. The Prologue and Chapters 1, 4, 5, 9, and 12 are the most directly relevant.
• Foot, Philippa. Natural Goodness. Oxford University Press, 2001. Foot’s argument that evaluations of living things are grounded in natural facts — without theological premises — gives Aristotle’s telos a contemporary philosophical foundation.
• Popper, Karl. The Open Society and Its Enemies, Vol. 2. Princeton University Press, 1971. Chapter 11 (“The Aristotelian Roots of Hegelianism”) contains the charge this episode poses and Part 2 must answer.
Further Context
The Aristotle episodes draw on two translation traditions for different purposes. The Crisp translation (Cambridge) is the accessible reading copy; the Bartlett and Collins translation (Chicago) is the scholarly reference, with a Straussian interpretive lineage that will become relevant as the series advances into the Academy Arc. Bekker numbers — the standard citation system for Aristotle — are used throughout and are edition-independent.
Related Episodes
• Episodes 11–13 — Interview with Matt Ehret (Parts 1–3): The open/closed systems framework established across these episodes is the direct intellectual bridge into E14. Aristotle’s telos is introduced here as the standard by which open and closed can be measured.
• Episode 7 — Plato vs. the Sophists: Rhetoric, Power, and Callicles: The most immediate precursor to the Academy Arc. Callicles’ argument that nature vindicates the strong is the counter-position Plato’s Academy was built to answer — and which Aristotle inherits and transforms.
• Episode 6 — Plato vs. the Sophists: The Allegory of the Cave: Plato’s argument that knowledge cannot be socially accumulated — only recollected — is the backdrop against which Aristotle’s very different account of learning and natural form becomes significant.
Coming Up Next
Episode 15 — Aristotle, Part 2 — publishes Monday, July 13.
Part 2 takes up the question Part 1 leaves open: can a fixed account of human ends be compatible with an open society? MacIntyre’s defense of Aristotle against Popper moves to the center, and phronesis — practical wisdom, the capacity to judge well in particular situations — gets the full treatment it was held back from here. The question the series keeps returning to is whether progress requires a prior account of what we are progressing toward. Aristotle thinks it does.
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--:-- - Open vs Closed Systems
--:-- - Telos and Flourishing
--:-- - Three Key Terms
--:-- - Every Action Aims at a Good
--:-- - MacIntyre on Virtue
--:-- - Eudaimonia and the Virtues
--:-- - Suspicion of Fixed Ends
--:-- - Foot's Natural Goodness
--:-- - Tabula Rasa Clarified
--:-- - Popper's Closed Society Critique
--:-- - Can Telos Stay Open?
--:-- - Wrap Up and Part 2 Preview
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Aristotle's philosophical framework,
specifically his ideas about essence
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and his account of change moving
towards a fixed end, telos, generates
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the intellectual architecture
of the closed society, whether
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Aristotle intended this or not
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Hi, welcome to Notions of Progress,
the show that traces ideas of progress
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from antiquity to the age of AI.
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In the last three episodes, we spent with
Matt Ehret following his argument that the
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history of progress is a struggle between
two competing visions of civilization,
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one that builds and one that extracts.
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00:00:49,139 --> 00:00:51,859
At the end of that argument was
a framework you may remember
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from episode eleven, the open
system versus the closed system.
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An open system, on Ehret's account,
develops its internal capacities.
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A closed one manages and
depletes their capacities.
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That framework raised a question
we set aside at the time: What
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exactly is being opened or closed?
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What is the standard by which
we judge whether a civilization
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is developing or declining?
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What does it mean to say that a human
being or a society is flourishing?
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This, by very nature, is
a concept of progress.
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Aristotle had an answer, and it
begins with a question most of
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us stopped asking a long time
ago: What is a human being for?
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In this episode, we are going
to work through three ideas.
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First, how Aristotle
understands the relationship
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between activity and the good.
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Second, what he means by telos.
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Telos, the end or purpose internal
to a form of life, and why it
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is grounded in nature rather
than assigned from the outside.
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And third, a challenge we will carry
into part two, posed by Karl Popper
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about whether any fixed account of human
ends is compatible with an open society
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Three terms will carry the argument today.
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The first is telos from the
Greek meaning end or purpose.
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According to MacIntyre's reading
of Aristotle, the telos of a mind
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of a thing is the end that it
is internal to its form of life.
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What it means for a thing of
that kind to be functioning well.
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A telos is not-- it's
not a goal you choose.
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It is whether you are oriented toward
virtue of what you actually are.
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The second, eudaimonia, often
translated as happiness, but
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more precisely to flourish.
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For Aristotle, eudaimonia is the full
realization of what human beings are
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capable of, what they can become.
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It is a life lived well, not a
feeling we are trying to produce.
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The third term is phronesis, which
translates to practical wisdom.
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We will name it here and return to
it in depth in part two and in our
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upcoming episode with Professor Atif
Ansar, where it will do real work.
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For now, phronesis is the capacity to
judge well in particular situations.
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It is how telos meets the world
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The question of what a human being is
sounds like an ancient idea, a-and, and
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it well may be, but it has not gone away.
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When we design institutions such
as hospitals, schools, and cities,
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we are making assumptions about
what well-being consists in.
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We are assuming, at least implicitly, that
there is something it means for human life
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to be going well rather than going badly.
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Aristotle's argument is that these
assumptions need to be examined.
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They can't be left implicit.
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The episodes ahead will test
whether they can indeed be grounded
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Aristotle himself opens the Nicomachean
Ethics, his work, not with a principle or
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a commandment, but with an observation.
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Every activity, every inquiry, every
pursuit aims at some kind of good.
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Archery aims at hitting the target, for
example, or medicine aims at health.
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Strategy aims at victory.
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Politics, and this is the one that
Aristotle cares the most about,
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aims at the good of the community.
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The claim is not yet a claim about
the fundamental nature of things.
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It is a description of
how human activity works.
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On Aristotle's account, we
are purposive creatures.
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We act towards ends.
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The question he then asks is whether
there is a highest good, one that orders
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and makes sense of all the others.
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Alasdair MacIntyre, in After Virtue,
his very well-known work on Aristotle,
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frames this as the foundational move
of the Aristotelian tradition, where
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enlightenment moral philosophy, on
MacIntyre's account, begins from rules,
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what should I do and why should I obey?
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Aristotle, conversely,
begins from character.
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What kind of person should I become?
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What does it mean for a human
being to be living well?
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So the key here is the shift from
virtue to rule following, MacIntyre
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argues, is the defining mark of
what went wrong in modern ethics.
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Rules without a prior account of what
human beings are for cannot carry the
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moral weight we ask of them, he claims.
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MacIntyre makes this point
with characteristic directness.
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Aristotle takes himself not to
be inventing an account of the
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virtues, but to be articulating
what is already implicit in thought.
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He is not constructing a
system from first principles.
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He is giving rational form to what
the best practice already assumes.
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MacIntyre walks through Aristotle's
arguments against the rival
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candidates for the highest good.
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Money, he claims, is always pursued
for the sake of something else.
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It is never a final end, a final good.
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Honor depends on the opinion of others.
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What it means cannot
be the good in itself.
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Additionally, pleasure accompanies
successful activity, but it
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does not constitute it, meaning
that pleasure is not a good in
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itself according to this model.
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The name Aristotle gives to the highest
good, the overarching good, is eudaimonia.
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The translation is genuinely difficult,
but it roughly equates to something
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along the lines of flourishing.
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This is an important concept, and
MacIntyre suggests that we think of
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it as being well and doing well, a
state in which a person is both in good
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condition and acting from that condition.
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So what does eudaimonia consist in?
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Well, MacIntyre, reading
Aristotle carefully in this point,
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distinguishes two senses of the
relationship between means and ends.
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This is the heart.
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In one sense, means and end are separable.
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You can achieve the same
end by different means.
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But MacIntyre argues that for Aristotle,
the virtues, courage, justice,
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practical wisdom, temperance, are not
related to eudaimonia in that way.
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What constitutes a complete human life
lived at its best already includes
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the exercise of these virtues.
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So in other words, this isn't the pathway.
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This is already part of how they operate.
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They are, in MacIntyre's reading,
partly constitutive of the end.
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They are, in MacIntyre's reading,
partly constitutive of the end,
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not merely instrumental to it.
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So what MacIntyre's reading of Aristotle
turns on is this: the question of how to
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live well cannot be separated from the
question of what kind of a person to be.
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The two are one and the same.
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The highest good is not a
target you hit by the right
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sequence of actions, therefore.
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It is a form of life that you inhabit
through the cultivation of character
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One of the most persistent
problems in reading Aristotle is
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a misreading that often occurs.
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Scholars who have spent careers
defending Aristotle's account of telos,
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including Philippa Foot and Alasdair
MacIntyre, often begin by addressing
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a suspicion that attaches itself to
the concept almost automatically.
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And it goes like this, that any fixed
account of what human beings are for
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must be at bottom a blueprint of control.
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This is their interpretation of
how people misinterpret Aristotle,
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and it turns into a suspicion.
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The suspicion runs like this.
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If there is a fixed end built into
human nature, they claim that this is
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Aristotle's motives, then someone, a
philosopher, a priest, a state, must be
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in a position to specify and enforce it.
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So both Foot and MacIntyre both argued
that this suspicion, however, though
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understandable, rests on a fundamental
confusion on their part about how this
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kind of evaluation actually works.
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Understanding that confusion
is the work of this section.
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Philippa Foot, in her work Natural
Goodness, provides an account of
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how this kind of evaluation works.
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Her argument starts with a simple example.
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When we say that a wolf is defective
because it cannot run, we're not imposing
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an external standard onto the wolf.
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We're recognizing something about what
a wolf is, the essence of that wolf.
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So what it needs to do to
live and flourish as a wolf.
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The evaluation is grounded in the
natural form of life of the species.
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So a wolf with defective legs is, in a
perfectly straightforward sense, a bad
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wolf, not because we disapprove of it, but
because it is failing to be what a wolf
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character, characteristically is and does.
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So Foot extends this
logic to human beings.
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What counts as a good human life
is similarly grounded in what human
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beings are, their characteristic
form of life, their natural ends.
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And this is Aristotle's telos
argument made in the language
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of contemporary philosophy.
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Without the theological premises and
without appeal to medieval frameworks.
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So Foot's argument is that the old
objection, you cannot derive what
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ought to be from what is, does not
apply to evaluations of living things.
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Saying what a number-- Saying what
a member of a natural kind needs in
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order to function well on her account
is a ki-- it's like a factual claim.
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So at this point, we need to
make a distinction that will
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prevent serious misunderstanding.
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One that has given some of the most
influential criticism of Aristotle,
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including the one we are about to examine.
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So Aro- Aristotle holds in his
work, De Anima, that the intellect
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begins without innate content.
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This, this is a term we're gonna
introduce here that you've heard before.
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What he's saying is, the mind at
birth is like a writing tablet on
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which nothing has been inscribed.
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This is often referred to as, as
Aristotle's idea of tabula rasa.
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All knowledge, he claims,
comes through the senses and
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is built up through experience.
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This is Aristotle's account of how we come
to know things, our epistemological path.
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But there's an important
distinction to note here.
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His account of how we come to
know things is not the same
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as his account of what we are.
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So that's where the
confusion often creeps in.
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The claim that human beings have
a telos, a natural end internal
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to their form, is not a claim
about what we are born knowing.
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It is a claim about what we actually are.
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A blank state in terms of
knowledge is entirely compatible
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with a determinant natural form.
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So we often hear about the acorn
does not know it's going to become
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an oak tree, but it is nonetheless
going to become an oak tree.
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In MacIntyre's reading of Aristotle,
the form of the human good is
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not what we are born knowing.
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It is what Aristotle holds we are
oriented towards by virtue of what we are.
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So by treating Aristotle's openness about
how we come to know things as license for
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the conclusion that human nature is in
itself plastic and endlessly revisable,
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that is, according to MacIntyre, the root
error in some of the most influential
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criticisms of Aristotelian ethics.
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MacIntyre's entire defense of
Aristotle depends on keeping these
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two things absolutely separate.
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We need to keep that in mind
when we turn to our last person,
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our last theorist, Karl Popper.
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What Foot and MacIntyre both
argue is that the telos is not a
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specification imposed from the outside.
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It is on their reading of Aristotle,
the internal logic of a form of
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life, what it means for a thing of
that kind to be functioning well.
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The blank state is about
how we come to know.
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This is back to the tabula rasa.
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So these things have to be
understood in a separate way.
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The human form is about what
we are, not what we know.
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Well, here is what Karl Popper charges
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In his well-known work, The Open Society
and Its Enemies, published in nineteen
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forty-five, he directs a sustained and
serious argument against Aristotle.
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Popper is not a careless thinker, and his
charge is not that Aristotle was a bad
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person or he had authoritarian intentions.
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The charge is structural.
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Specifically, his ideas about essence
and his account of change moving
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towards a fixed end, telos, generates
the intellectual architecture
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of the closed society, whether
Aristotle intended this or not.
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So you hear what, what
Popper is saying here.
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He's basically saying that because
of the acorn and the oak tree
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00:14:37,427 --> 00:14:42,257
example that we discussed, he sees
this as a, as an archytype which
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00:14:42,257 --> 00:14:46,577
describes a closed society, which
is what Popper is arguing against.
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At the center of Popper's argument
is Aristotle's concept of telos, the
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very idea that we've been working
with this in this episode, that every
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developing thing carries within itself
the seed of what it is moving towards.
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So Popper's argument is, uh, in
chapter eleven, is that this concept,
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however innocent it may appear in
Aristotle's account of nature and
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00:15:09,837 --> 00:15:14,847
biology, becomes politically dangerous
when taken by others and when applied
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to peoples, nations, and states.
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So Popper's argument runs as follows:
For Aristotle, change is the realization
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of potentialities already present in
a thing's inner nature of what we are.
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The form or essence of a developing
thing stands at the end of its
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development, not at the beginning.
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And this generates what Popper identifies
as three ideas that later on Hegel will
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later inherit and push to their extreme.
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First That we can only know a
thing's inner nature through
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its historical development.
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Second, that development reveals a destiny
that once there was from the beginning,
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a kind of inescapable, essential fate.
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And third, that the inner nature must
unfold through change to become fully
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real, which means that self-assertion
and the drive to realize one essential
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00:16:10,005 --> 00:16:14,185
nature become the fundamental categories
of both personal and political life.
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00:16:16,195 --> 00:16:19,875
Well, the political implication on
Popper's reading is significant.
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If a person or a state has a hidden
inner nature that history is in the
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00:16:26,315 --> 00:16:31,175
process of realizing, then political
institutions can claim to be the
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instruments of that realization.
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So this is very interesting, right?
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Because here he's describing, uh,
a built-in script, a powerlessness,
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if, if you will, of these political
institutions for something
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that's unfolding its own destiny.
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And a claim of that kind is not
easily subject to democratic
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00:16:48,605 --> 00:16:51,965
revision, so it's very difficult
for people to refute when presented.
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You cannot vote against
what history requires.
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That's his basic argument.
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You cannot reform what essence demands.
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The closed society, therefore, for
Popper, is one in which political
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00:17:05,045 --> 00:17:09,835
authority insulates itself from criticism
by just appealing to a necessity that
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00:17:09,845 --> 00:17:12,245
transcends ordinary deliberation.
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Aristotle's telos then, on Popper's
account, is where the insulation begins.
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And Popper's charge is serious, and
it deserves to be taken seriously.
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MacIntyre, as we will see in part
two, argues that Popper has misread
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the relationship between telos and
political authority in Aristotle.
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So this goes back to what we were
talking about, that there's a
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separation between what we are and
how we learn, and this is essentially
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00:17:40,905 --> 00:17:44,895
what, what he believes, what MacIntyre
believes that Popper is conflating.
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00:17:46,385 --> 00:17:50,215
Telos, on MacIntyre's reading, provides
the standard by which political
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arrangements are judged, but not the
authority that exempts them from judgment.
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The tradition that runs from Aristotle
through Aquinas generates natural law as a
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constraint on political power, a standard
against which rulers can be found wanting
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But we'll talk more about
that in episode two.
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For now, the charge stands as the
question the episode is organized
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around, and it goes like this: Can a
fixed account of human ends, of telos,
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be compatible with an open society?
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And is Aristotle's telos the kind of
fixed account that Popper thinks it is?
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Popper's charge is not
answered in part one.
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It is posed a question and in
part two, and we will address it.
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It is a genuine question, and
it is not easily dismissible.
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So in closing, what this episode has
traced through MacIntyre's and Foot's
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00:18:44,299 --> 00:18:48,029
reading of Aristotle is a framework
built on a single foundational claim,
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00:18:48,629 --> 00:18:52,299
that there is such a thing as human
form of life, and that living well
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means realizing that form of life.
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Aristotle begins with the observation
that every activity aims at some
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kind of good, and whether there is
a highest good that makes the others
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intelligible, this is his claim.
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00:19:06,669 --> 00:19:10,629
He identifies that good as
what he defines as eudaimonia.
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It's not a feeling to be produced,
but a form of life to be lived.
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00:19:15,389 --> 00:19:18,749
And he, he grounds it in an
account of human nature, what a
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human being is for internal to
the form of life of that species.
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So what the episode has also
drawn is a distinction that
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will matter going forward.
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Aristotle's account of how we come
to know things holds that the mind
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begins without innate content.
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00:19:35,319 --> 00:19:38,459
This is a repeat of what we
discussed before, the tabula rasa.
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His account of what we are holds
that human nature is not therefore
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blank or i- infinitely malleable.
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Those are things that are claims
at two completely different levels.
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The first does not undermine
the second, as Popper claimed.
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And we've introduced Popper's
charge that Aristotle's idea about
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00:19:57,179 --> 00:20:01,529
essence and fixed ends generate the
intellectual architecture for the
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00:20:01,529 --> 00:20:06,199
closed society, which he sees as a very
dangerous thing, especially following
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the, the events of World War II.
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In
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part two, we will ask whether Aristotle's
account means for practical wisdom,
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00:20:14,719 --> 00:20:17,839
for the capacity to judge well in
particular situations, and whether
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MacIntyre's defense of Aristotle against
Popper can actually be sustained.
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The question this series keeps returning
to over and over is whether progress
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itself requires a prior account of
what we are progressing towards.
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So that's the question about telos.
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00:20:34,439 --> 00:20:38,499
Aristotle thinks it does, and he thinks
he knows what that account looks like.
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Part two will be out in two weeks.
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00:20:42,009 --> 00:20:46,329
The sources for both episodes, the
Nicomachean Ethics, MacIntyre's
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00:20:46,339 --> 00:20:50,119
After Virtue, and Philippa Foot's
Natural Goodness, and Popper's Open
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00:20:50,119 --> 00:20:52,599
Society are all in the show notes.
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Thanks so much for listening today.
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We look forward to
seeing you the next time
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00:21:00,436 --> 00:21:03,456
If you enjoyed this episode, you
can find "Notions of Progress" on
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00:21:03,456 --> 00:21:06,026
YouTube, Apple Podcasts, and Spotify.
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00:21:06,296 --> 00:21:09,586
And all the sources, reading
recommendations, and further context
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00:21:09,596 --> 00:21:11,546
for every episode are in the show notes.
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00:21:12,086 --> 00:21:16,156
If you are enjoying this series, liking
the episode on YouTube and signing up for
313
00:21:16,166 --> 00:21:21,376
the newsletter at notionsofprogress.com
really helps more people find these ideas.
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00:21:21,946 --> 00:21:26,466
For those who wanna go even deeper,
the Curator's Flame blog and Substack
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00:21:26,496 --> 00:21:30,346
newsletter accompany each episode with
the questions the scholarship leaves open.
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00:21:31,026 --> 00:21:34,276
I'm Marshall, tracing ideas
of progress from antiquity to
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00:21:34,276 --> 00:21:38,126
the age of AI and leaving the
debates open for you to consider.
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Until next time









