The 2nd Scientific American Book of Mathematical Puzzles & Diversions
Martin Gardner
Philosophy of Science - Practice of Science:
C. Smith
Why the Future Doesn't Need Us
Bill Joy
Dictionary of the Khazars - Androgynous Edition
Milorad Pavić
Introduction to Fuzzy Logic
James K. Peckol
Midlife: A Philosophical Guide
Kieran Setiya & Kenneth E. Wilber