"Evidence is the only reason to believe something." (Richard Dawkins)

"If today you can take a thing like evolution and make it a crime to teach it in the public school, tomorrow you can make it a crime to teach it in the private schools [...] After while [...] it is the setting of man against man and creed against creed until with flying banners and beating drums we are marching backward to the glorious ages of the sixteenth century when bigots lighted fagots to burn the men who dared to bring any intelligence and enlightenment and culture to the human mind."
(Clarence Darrow at the Sopes trial, 1925)

"Faith is believing in what you know ain't so." (Mark Twain)

"Is God willing to prevent evil, but not able? Then he is not omnipotent.
Is he able, but not willing? Then he is malevolent.
Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?" (Epicurus)