Edward Abbey
Gene Logsdon
Neal Stephenson
Kyle Rankin
Ayn Rand
Stephen Hawking
Louis Rosenfeld
Steven D. Levitt
Thomas More
Jean-Paul Sartre
Roger Penrose
Peter Morville
Mortimer J. Adler
Carl Sagan
Edward O. Wilson
Stephen J. Dubner
Bertrand Russell
Aristotle
Friedrich Nietzsche
Randal L. Schwartz
Julie Jones
Martin Gardner
Stephen W. Hawking
Joseph Conrad