Philosophical Investigations by Ludwig WittgensteinTractatus Logico-Philosophicus by Ludwig WittgensteinPublic and Private Occasions by Ludwig WittgensteinPhilosophical Occasions by Ludwig WittgensteinCulture and Value by Ludwig Wittgenstein
Wittgenstein
46 books — 12 voters
The Will to Power by Friedrich NietzscheDiscourse on Method and Meditations on First Philosophy by René DescartesThe Structure of Scientific Revolutions by Thomas S. KuhnAgainst Method by Paul Karl FeyerabendCritique of Pure Reason by Immanuel Kant
Knowledge
245 books — 257 voters

The Structure of Scientific Revolutions by Thomas S. KuhnThe Logic of Scientific Discovery by Karl Popper
Scientists and Philosophers
242 books — 168 voters
A Canticle for Leibowitz by Walter M. Miller Jr.Scientology by L. Ron HubbardHis Dark Materials by Philip Pullman
Best Author-Created Religions
108 books — 131 voters

A History of Western Philosophy by Bertrand RussellThe Nicomachean Ethics by AristotleThe Republic by PlatoAn Essay Concerning Human Understanding by John LockeEthics by Baruch Spinoza
Best World Philosophy Book
978 books — 1,489 voters