Stephen Hawking Stephen W. Hawking Michio Kaku Brian Greene Richard P. Feynman John Mcphee Carl Sagan Edward Abbey Richard Dawkins Hawkings Einstein Richard Feynman Rachel Carson Douglas Hofstadter Aldo Leopold Albert Einstein Douglas Rushkoff Roger Penrose Donald Knuth Neil Peart Pinker Arundati Roy Raymond Kurzweil Günter Grass Sartre Sam Harris Daniel Tammet Marcus Chown Volpi Eric Berne David Deutsch Jeff Hawkins Louis Pauwels Gary Small Oscar Zeta Acosta Alan Weisman Charles Seife John Gribbon Louis Masterson Randy Pausch Oren Patashnik Stephen Hawkins Ronald Graham Walt Disney Sheckley Glenn Beck Edwin Abbott George Lakoff Peter Kreeft