Subreddit
Top books from r/askphilosophy
A Q&A subreddit moderated by academic philosophers and graduate students, where users ask direct questions about philosophical texts, arguments, and traditions.
Updated August 2026 — rankings refresh with each new pull of comment data.
About this ranking
r/askphilosophy is where actual reading recommendations happen: the top result is Kant's Critique of Pure Reason at 216 mentions, followed by Camus's Myth of Sisyphus (152) and the Tractatus (136) — a spread that reflects genuine breadth across analytic and continental traditions. Compare that to r/philosophy, where the same titles appear but at a fraction of the volume (Critique pulls only 21 mentions there), and r/Stoicism, which is essentially a Meditations monoculture (990 mentions) built around a handful of accessible Roman texts. r/askphilosophy skews toward primary sources and canonical difficulty: Heidegger's Being and Time (131 mentions), Nicomachean Ethics (134), and Philosophical Investigations (95) all outrank any popular-press philosophy title. The moderation keeps discussion text-focused, which filters out self-help adjacents that dominate elsewhere.
By year
Most-mentioned in r/askphilosophy
Ordered by tracked mention count across all published years. Sentiment is shown as context and does not change the order.
#1 Critique of Pure Reason
Immanuel Kant
Kant's 1781 attempt to settle the limits of human knowledge — the book that split philosophy in two and still hasn't been fully digested.
#2 The Myth of Sisyphus
Albert Camus
A 1942 essay that opens with the question of whether life is worth living and ends by insisting Sisyphus is happy.
#3 Tractatus Logico-Philosophicus
Ludwig Wittgenstein
Wittgenstein built a numbered ladder from logical atomism to the inexpressible, then said the ladder had to be discarded once you climbed it.
#4 Being and Time
Martin Heidegger
Heidegger's argument that human existence only gets its meaning from death — 162 Reddit mentions, mostly from people explaining why it's so hard to read.
#5 Nicomachean Ethics
Aristotle
Aristotle's 2,400-year-old argument that living well depends on virtue, leisure, and the company you keep — still the canonical text for the field.
#6 Beyond Good and Evil
Friedrich Nietzsche
Nietzsche dismantles the moral framework Western civilization built on, then refuses to tell you what to replace it with.
#7 Philosophical Investigations
Ludwig Wittgenstein
Wittgenstein's public recantation of his own first masterpiece, dismantling the picture theory of meaning one language-game at a time.
#8 Phaedo
Plato
Socrates spends his final hours arguing that the soul survives death — and inviting his friends to find the holes in his logic.
#9 On the Genealogy of Morals
Friedrich Nietzsche
Nietzsche traces where 'good' and 'evil' come from — and argues the answer involves priests, resentment, and a deliberate inversion of aristocratic values.
#10 Meditations
Marcus Aurelius
The Roman emperor's private notebook — written to himself in Greek, never meant to be published — became the Stoic canon's most-cited text 1,800 years later.
#11 Thus Spoke Zarathustra
Friedrich Nietzsche
Nietzsche's prophet descends a mountain with three ideas — the Ubermensch, eternal recurrence, the death of God — and r/askphilosophy explains why to read something else first.
#12 Sophie's World
Jostein Gaarder
A teenage girl in Norway starts receiving anonymous philosophy lessons by mail and slowly realizes she might be a character in someone else's story.
#13 A History of Western Philosophy
Bertrand Russell
Bertrand Russell recaps 2,500 years of philosophy from ancient Greece to logical positivism, with opinions — many of them wrong, all of them readable.
#14 Fear and Trembling
Søren Kierkegaard
Kierkegaard uses Abraham's knife at Isaac's throat to ask whether any act of faith can be explained to the person standing next to you.
#15 A Theory of Justice
John Rawls
The 1971 book that reset political philosophy by asking what principles rational people would choose if they didn't know where they'd land in society.
#16 Groundwork of the Metaphysics of Morals
Immanuel Kant
Kant's 1785 argument that morality comes from reason alone — the Categorical Imperative in its original 90-page form, before the Critiques complicate everything.
#17 Being and Nothingness
Jean-Paul Sartre
Sartre's 700-page argument that you are nothing until you choose what to be — and that terror is the correct response to that fact.
#18 The Problems of Philosophy
Bertrand Russell
Bertrand Russell wrote a 90-page intro to analytic philosophy in 1912 and r/askphilosophy still hands it to newcomers first, every time.
#19 The Republic
Plato
A 2,400-year-old Athenian asks why anyone would choose justice over injustice, then spends 400 pages building a city to answer the question.
#20 Apology
Plato
A philosopher on trial chooses death over silence, defending a life of relentless questioning before the jury that will kill him.
#21 What Does It All Mean? A Very Short Introduction to Philosophy
Thomas Nagel
Thomas Nagel surveys free will, knowledge, death, and the meaning of life in 100 pages — the first book assigned on a philosophy degree.
#22 On Liberty
John Stuart Mill
Mill's 1859 case for why society has no right to silence you — even when you're wrong — distilled to 130 pages that r/askphilosophy assigns before almost anything else.
#23 Reasons and Persons
Derek Parfit
Derek Parfit dismantles self-interest, personal identity, and population ethics — then hands you the rubble and asks what you're going to do with it.
#24 A Treatise of Human Nature
David Hume
Hume uses a billiard ball and a bundle of perceptions to dismantle causation and personal identity — r/askphilosophy is still linking the passages in 2026.
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