All human progress, even in morals, has been the work of men who have doubted the current moral values, not of men who have whooped them up and tried to enforce them.

A man who knows a subject thoroughly, a man so soaked in it that he eats it, sleeps it and dreams it- this man can always teach it with success, no matter how little he knows of technical pedagogy.

Hanging one scoundrel, it appears, does not deter the next. Well, what of it? The first one is at least disposed of.

I've made it a rule never to drink by daylight and never to refuse a drink after dark.

A large part of altruism, even when it is perfectly honest, is grounded upon the fact that it is uncomfortable to have unhappy people about one.

Truth - Something somehow discreditable to someone.

The intelligent, like the unintelligent, are responsive to propaganda.