More than two hundred new and challenging logic puzzles—the simplest brainteaser to the most complex paradoxes in contemporary mathematical thinking—from ou

Few things have stirred the imagination as much as Infinity! It has all sorts of curious properties which at first seem paradoxical, but then turn out not to be

The author of Forever Undecided, Raymond Smullyan continues to delight and astonish us with his gift for making available, in the thoroughly pleasurable form of

Part of the best-selling Draw 50 series this step-by-step guide to sketching and rendering astronauts, planets, asteroids, comets, spaceships, space stations, a