Sir Arthur Charles Clarke (16 December 1917 – 19 March 2008)
British Science Fiction Author, Inventor, Futurist, and Atheist
Author of 2001: A Space Odyssey, (1968)

Religion is a by-product of fear. For much of human history, it may have been a necessary evil, but why was it more evil than necessary? Isn’t killing people in the name of god a pretty good definition of insanity?