By the late 1960s, a strange rumor had spread through the English-speaking universities: that political philosophy was dead. The logical positivists had reduced its great questions — justice, rights, the good society — to expressions of emotion (Lesson 39), and for decades serious philosophers had mostly confined themselves to analyzing language and logic. Then, in 1971, a shy, stammering Harvard professor named John Rawls published A Theory of Justice, a six-hundred-page argument about how a fair society should be arranged — and single-handedly brought the subject back to life. The book's success was a symptom of a larger turn: after half a century of clarifying meaning and policing nonsense, philosophy returned, with all its new rigor intact, to the substantive questions that had always driven it. What is justice? What is the mind? How should we live, and toward whom? This final module follows that return into the living present.
Two great movements define the contemporary conversation. The first is the rebirth of grand, systematic argument about the oldest questions: Rawls on justice, Kripke and Lewis on necessity and possible worlds, the philosophers of mind on consciousness and machines, the ethicists on what we owe one another. Analytic philosophy, having spent its youth demolishing metaphysics, grew up to rebuild it. The second is the expansion of the circle — of who and what gets to count, and whose voice gets heard. Peter Singer extended moral concern to animals and to the distant poor; environmental philosophers extended it to future generations; and feminist, anti-racist, and global-justice philosophers — building on Beauvoir, Du Bois, and Fanon — forced the discipline to reckon with the women, the colonized, and the enslaved whom the "universal" tradition had so often excluded. The canon that this course has traced, overwhelmingly European and male, began at last to acknowledge how much it had left out.
And then the present arrived with its own emergencies. Artificial intelligence has made the philosophy of mind a matter of daily headlines and forced the ancient question of whether a machine can think into urgent, practical form. The climate crisis has made our obligations to future generations and to the planet inescapable. And the digital transformation of how we know things — the age of misinformation, echo chambers, and AI-generated content — has turned epistemology, the driest-seeming branch, into a matter of civic survival. The Great Conversation that began with Thales asking what the world is made of now asks what we owe the future, whether our machines can understand, and how a divided species can still know anything together. This module brings the story to the threshold of tomorrow — and then asks where it goes next.
Mini-timeline
- 1971 — Rawls's A Theory of Justice revives political philosophy
- 1971 — Thomson's "A Defense of Abortion"; the violinist
- 1972 — Singer's "Famine, Affluence, and Morality"; Nozick's Anarchy, State, and Utopia (1974)
- 1975 — Singer's Animal Liberation; Kripke's Naming and Necessity
- 1980 — Searle's Chinese Room argument
- 1984 — Parfit's Reasons and Persons
- 1989 — Crenshaw names "intersectionality"
- 1995 — Chalmers poses the "hard problem" of consciousness
- 1997 — Mills's The Racial Contract; the extended mind (Clark and Chalmers, 1998)
- 2007 — Fricker's Epistemic Injustice
- 2020s — large language models reopen the question: can a machine understand?
Threads to watch
All six threads run live into the present. The just society is reborn with Rawls and contested by Nozick, the communitarians, the libertarians, and the theorists of capability, then expanded by feminism, critical race theory, and global justice. What the self is returns through the philosophy of mind — functionalism, the hard problem, the extended mind — and through the reckoning with how gender and race shape identity. Who counts morally widens further than ever before: to animals, to future generations, to the global poor, to the silenced and the marginalized. What science can know meets the digital epistemic crisis and the rise of the machines. Appearance and reality returns in Kripke's necessity, Lewis's possible worlds, and the question of whether the mind is what the brain does. And faith and reason persists in the revival of philosophy of religion (Plantinga, Swinburne) and in the perennial question of meaning in a scientific age. The conversation has not narrowed; it has opened wider than at any point in its 2,600 years.
Where this leads
This module ends not with an answer but with the live edge of the conversation — and with you. The capstone walks the six threads from Miletus to the mid-2020s, surveys the questions now most urgently open (climate ethics, the alignment of artificial intelligence, the diversification of the canon into a genuinely global philosophy), and points you toward the primary texts and the pathways by which you might continue. Philosophy is not a body of settled results but an ongoing argument that each generation must take up for itself. After 2,600 years, the conversation is not finished. It is being handed to you.
State of the conversation
Returning after a break, or just starting here? Here is where things stand. The twentieth century's split between analytic and continental philosophy has begun to heal, and philosophy has returned, with hard-won rigor, to the great substantive questions it had briefly set aside. The just society has been refounded and fiercely contested. What the self is has become a live problem again in the age of neuroscience and artificial intelligence. Who counts morally has expanded past every earlier boundary — to animals, future generations, and all those the tradition had excluded. What science can know faces the double challenge of the machine and the misinformation age. And the canon itself has begun to acknowledge how partial it always was, opening toward the philosophies of Africa, India, China, and Indigenous traditions that the Western story left out. The questions are older than philosophy; the urgency is entirely of the moment. We have arrived at the present — which is to say, at the place where the conversation becomes yours.