Forever Undecided

Being Logical: A Guide to Good Thinking

Satan, Cantor, And Infinity And Other Mind-bogglin

A Rulebook for Arguments: Edition 5

The Riddle of Scheherazade: And Other Amazing Puzzles, Ancient and Modern

Naomiki Sato's Origami Roses: Create Lifelike Roses and Other Blossoms

The Gödelian Puzzle Book: Puzzles, Paradoxes and Proofs

How to Solve a Rubik's Cube: The Easy Solution to The Rubik's Cube, A Beginner's Guide to Solving This Puzzle, Quick and Easily! (3x3 Cube) (Rubix) (2nd Edition)

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

A Beginner's Guide to Mathematical Logic

Brain Training And Brain Games for Memory Improvement: Concentration and Memory Improvement Strategies with Mind Mapping: Concentration and Memory Improvement Strategies with Mind Mapping

Who Knows?: A Study of Religious Consciousness

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

Reflections: The Magic, Music And Mathematics Of Raymond Smullyan

A Course in Miracles - Explanations of Major Themes

The Tao Is Silent