“Belief isn’t based on facts, as facts are proven by the 5 senses, if it was it would be, Knowing.”
Related quotes
Source: What Is This Thing Called Science? (Third Edition; 1999), Chapter 4, Deriving theories from facts: induction, p. 41.
“Never assume that any fact is useless until it is so proven.”
Source: Short fiction, Midsummer Century (1972), Chapter 9 (p. 62)

“Beliefs do not change facts. Facts, if one is rational, should change beliefs.”

“Each recognized the fact that real commitment could be proven only through the passage of time.”

[New York Times, 2005-01-04, God (or Not), Physics and, of Course, Love: Scientists Take a Leap, http://www.nytimes.com/2005/01/04/science/04edgehed.html?pagewanted=3&ei=5090&en=ce9bddb9581db4d9&ex=1262581200&partner=rssuserland, 2006-08-22]
Anderson was describing his dislike for "string theory".

“Belief creates the actual fact.”
“An ethic isn’t a fact you can look up. It’s a way of thinking.”
Source: More Than Human (1953), Chapter 3, p. 183