Human Knowledge: Its Scope and Limits

Being Logical: A Guide to Good Thinking

The Art of Philosophizing: And Other Essays

A Rulebook for Arguments: Edition 5

Our Knowledge of the External World

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

Unpopular Essays

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

History of Western Philosophy

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

The Problems of Philosophy

A Course in Miracles - Explanations of Major Themes

What I Believe: Edition 2

The Conquest of Happiness

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

The Analysis of Matter

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

How To Become A Philosopher; How To Become A Logician; How To Become A Mathematician

The Critical Thinking Toolkit