"I contend we are both atheists, I just believe in one fewer god than you do. When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours." 
Stephen F. Roberts

"Is there, we wonder, some virtue in being difficult?" 
The Ethical Slut
2nd edition, page 14

“No man really becomes a fool until he stops asking questions.”  
Charles P. Steinmetz 
Prussian Engineer and Inventor, 1865-1923

"Question with boldness even the existence of a god; because if there be one he must approve of the homage of reason more than that of blindfolded fear."  
Thomas Jefferson 
in a letter to Peter Carr, August 10, 1787

"Keith Olbermann is right when he says he's not the equivalent of Glenn Beck. One reports facts; the other one is very close to playing with his poop."
Bill Maher

"What counts is not what sounds plausible, not what we would like to believe, not what one or two witnesses claim, but only what is supported by hard evidence rigorously and skeptically examined.

Extraordinary claims require extraordinary evidence."
Carl Sagan
Encyclopedia Galactica [Episode 12]