No matter how smart or well-educated you are, you can be deceived.

[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.

Everyone who believes in telekinesis, raise my hand.

No evidence against a firmly-held belief, no matter how good or abundant it may be, will sway the true believer.

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

Heroin also makes people feel better, but I wouldn't recommend using heroin.