Every fool believes what his teachers tell him, and calls his credulity science or morality as confidently as his father called it divine revelation.

The only time my education was interrupted was when I was in school.

A modern gentleman [rich person] is necessarily the enemy of his country. Even in war he does not fight to defend it, but to prevent his power of preying on it from passing to a foreigner.

There is a terrible truthfulness about photography that sometimes makes a thing look ridiculous.

Besides, do any of us understand what we are doing? If we did, would we ever do it?

All sorts of bodily diseases are produced by half-used minds.

Nobel Prize money is a life-belt thrown to a swimmer who has already reached the shore in safety.