A desire presupposes the possibility of action to achieve it; action presupposes a goal which is worth achieving.

You'd let the whole world perish rather than soil that immaculate self of yours with a single spot of which you'd have to be ashamed.

Through all the years that I spent formulating my philosophical system, I was looking desperately for “intelligent agreement” or at least for “intelligent disagreement.” I found neither. Today, I am not looking for “intelligent disagreement” any longer ... What I am looking for is intelligent agreement.

The nation which once held the creed that greatness is achieved by production, is now told that it is achieved by squalor.

Ideas are the greatest and most crucially practical power on earth.

Errors of knowledge are not breaches of morality; no proper moral code can demand infallibility or omniscience.

There are no white lies, there is only the blackest of destruction, and a white lie is the blackest of all.