A prejudice is a vagrant opinion without visible means of support. >>
A coward is one who in a perilous emergency thinks with his legs. >>
Experience is a revelation in the light of which we renounce our error >>
What men want is not knowledge, but certainty. >>
There is nothing certain in a man's life but that he must lose it. >>
To be uncertain is to be uncomfortable, but to be certain is to be rid >>
To be positive: to be mistaken at the top of one's voice.