Birthday Quotes - Page 38
Intelligent life on a planet comes of age when it first works out the reason for its own existence.
Richard Dawkins (2006). “The Selfish Gene: 30th Anniversary edition”, p.30, OUP Oxford
Carl Sagan, Jerald F. TerHorst, Allan J. Mayer, Sharon S. McKern, Laurence J. Peter (1980). “Broca's brain: reflections on the romance of science”