We have fought long and hard to escape from medieval superstition. I, for one, do not wish to go back.

A quick example of that is a woman who said she'd been healed of throat cancer where the faith healer admitted he touched her on the forehead.

[Psychics] use exactly the same gimmicks that we magicians do - the same physical methods, the same psychological methods - and they effectively and profoundly deceive millions of people around the earth, to their detriment.

Blind belief can be comforting, but it can easily cripple reason and productivity, and stop intellectual progress.

There exists in society a very special class of persons that I have always referred to as the Believers. These are folks who have chosen to accept a certain religion, philosophy, theory, idea or notion and cling to that belief regardless of any evidence that might, for anyone else, bring it into doubt. They are the ones who encourage and support the fanatics and the frauds of any given age. No amount of evidence, no matter how strong, will bring them any enlightenment. They are the sheep who beg to be fleeced and butchered, and who will battle fiercely to preserve their right to be victimized.

Feeling better is not actually being better.

The problem with experiments has always been that human beings make the decisions on whether or not the animals have benefitted from the treatment.