The Open Society and Its Enemies

Being Logical: A Guide to Good Thinking

A Rulebook for Arguments: Edition 5

The Two Fundamental Problems of the Theory of Knowledge

Logically Fallacious: The Ultimate Collection of Over 300 Logical Fallacies (Academic Edition)

The Poverty of Historicism: Edition 2

The Philosopher's Book of Questions & Answers: Questions to Open Your Mind

All Life is Problem Solving

How to Win Every Argument: The Use and Abuse of Logic, Edition 2

In Search of a Better World: Lectures and Essays from Thirty Years

An Illustrated Book of Bad Arguments: Learn the Lost Art of Making Sense (Bad Arguments)

The Lesson of this Century: With Two Talks on Freedom and the Democratic State, Edition 2

A Course in Miracles - Explanations of Major Themes

Unended Quest: An Intellectual Autobiography, Edition 2

Knowledge and the Body-Mind Problem: In Defence of Interaction

A Reasonable Response: Answers to Tough Questions on God, Christianity, and the Bible

The Open Universe: An Argument for Indeterminism From the Postscript to The Logic of Scientific Discovery

There Are Two Errors in the the Title of This Book, Revised and Expanded (Again): A Sourcebook of Philosophical Puzzles, Problems, and Paradoxes, Edition 3

The World of Parmenides: Essays on the Presocratic Enlightenment