"The practical value of a truth is its truth."

"The world we see that seems so insane is the result of a belief system that is not working."

"The greatest discovery of all time is that a person can change his future by merely changing his attitude."

"The more original a discoverer, the more he is apt to be regarded as a lunatic at first."

"A great many people think they are thinking when they are merely rearranging their prejudices."