Brian Greene Stephen W. Hawking Michio Kaku Richard P. Feynman Stephen Hawking Raymond Kurzweil Timothy Freke George Lakoff Simon Singh Donald Knuth Ray Kurzweil John Shelby Spong H.G.Wells Carl Sagan Aubrey De Grey Bede Griffiths Larry Gonick Steven Pinker Jonathan Carrol Brian James Paul Davies Sagan Thomas L. Friedman Tony Robbins Matt Ridley Roger Penrose Henry Thoreau James Gleick John Gribbin Thomas Sowell Ronald Graham Ken Wilber Sam Harris Alessandro Baricco Jeff Hawkins Adrian Gilbert Simon Seoght Michael Ventura Christopher Alexander Edward De Bono Paul Johnson Gould Friedrich Hayek Jack Kornfield Elie Wiesel Pema Chodron Steven Chbosky Peter Benchley Richard Dawkins