It is only doubt that creates. It is only the minority that counts.

I believe in only one thing and that thing is human liberty. If ever a man is to achieve anything like dignity, it can happen only if superior men are given absolute freedom to think what they want to think and say what they want to say. I am against any man and any organization which seeks to limit or deny that freedom... [and] the superior man can be sure of freedom only if it is given to all men.

The cosmos is a gigantic flywheel making 10,000 revolutions per minute. Man is a sick fly taking a dizzy ride on it.

The smallest atom of truth represents some man's bitter toil and agony; for every ponderable chunk of it there is a brave truth-seeker's grave upon some lonely ash-dump and a soul roasting in hell.

I can't imagine a genuinely intelligent boy getting much out of college, even out of a good college, save it be a cynical habit of mind.

It is the dull man who is always sure, and the sure man who is always dull.

Science, at bottom, is really anti-intellectual. It always distrusts pure reason, and demands the production of objective fact.