War talk by men who have been in a war is always interesting; whereas moon talk by a poet who has not been in the moon is likely to be dull.

You cannot have a theory without principles. Principles is another name for prejudices.

When we remember we are all mad, the mysteries disappear and life stands explained.

I couldn't bear to think about it; and yet, somehow, I couldn't think about nothing else.

The New York papers have long known that no large question is ever really settled until I have been consulted.

Man is the only religious animal. In the Holy task of smoothing his brother's path to the happiness of heaven, he has turned the globe into a graveyard.

When even the brightest mind in our world has been trained up from childhood in a superstition of any kind, it will never be possible for that mind, in its maturity, to examine sincerely, dispassionately, and conscientiously any evidence or any circumstance which shall seem to cast a doubt upon the validity of that superstition. I doubt if I could do it myself.