Martin Gardner, the "Mathematical Games" columnist for Scientific American from 1956 to 1981, was also a philosopher, polymath, magician, religious thinker, and the author of more than 70 books, including The Annotated Alice, The Ambidextrous Universe, and Visitors from Oz. Here his life and works are celebrated in a bouquet of essays about him or in his honor. Introduced by his son Jim, the book includes reminiscences by Douglas Hofstadter, Morton N. Cohen, Scott Kim, David Singmaster, Michael Patrick Hearn, and many others; a festschrift contains essays by such writers as Raymond Smullyan and Robin Wilson. This volume also contains the final annotations Gardner made to the