For those of you you might have been in Book Sect at one time, the annotated Alice in Wonderland that we read was edited (and...um...annotated) by Gardner. I am a huge fan of this man's philosophical outpouring, even when I'm not quite sure that I understand it! He lived a long life though, one filled with mathematics, magic and philosophy.
Here is a sample of one of his enigmatic puzzles:
http://mathforum.org/wagon/fall97/p840.html