Bolzano's Logical System

How to Solve It: A New Aspect of Mathematical Method

Being Logical: A Guide to Good Thinking

A Rulebook for Arguments: Edition 5

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

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

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

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

A Course in Miracles - Explanations of Major Themes

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

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 Critical Thinking Toolkit

Fast Math: Learn the Secrets of Mental Math: By Using Vedic Math and Other Math Tricks to Perform Mental Calculations from Multiplication to Percentages without Calculators

Alan Turing: The Enigma: The Book That Inspired the Film The Imitation Game - Updated Edition