Faith is belief without proof. Faith is fine, but don't call it science.
Esp, Hauntings And Poltergeists: A Parapsychologist's HandbookLet's get proof before a public hanging and not after it.
Bullying Ben: How Benjamin Franklin Overcame BullyingIt is hard to adapt to chaos, but it can be done. I am living proof of that: It can be done
Breakfast of ChampionsThe fact that the poor are alive is clear proof of their ability.
Banker to the Poor: Micro-Lending and the Battle Against World PovertyThe chief proof of man's real greatness lies in his perception of his own smallness.
The Sign of FourGod is an hypothesis, and, as such, stands in need of proof: the onus probandi rests on the theist.
The Necessity of Atheism and Other Essays