About Raymond M. Smullyan

Raymond Smullyan received his PhD from Princeton University and has taught at Dartmouth, Princeton, Indiana University, and New York's Lehman College. Best known for his mathematical and creative logic puzzles and games, he is also a concert pianist and a magician. He is the author of over a dozen books of logic puzzles and texts on mathematical logic.

About Martin Gardner

Martin Gardner was a renowned author who published over 70 books on subjects from science and math to poetry and religion. He also had a lifelong passion for magic tricks and puzzles. Well known for his mathematical games column in Scientific American and his "Trick of the Month" in Physics Teacher magazine, Gardner attracted a loyal following with his intelligence, wit, and imagination.