As long as a man lives he should study. Death alone has the right to dismiss the school.

If nobody has too much, everybody will have enough.

The man who accepts opinions because they have been entertained by distinguished people, is a mental snob.

The intellectual advancement of man depends on how often he can exchange an old superstition for a new truth.

In a world of cruelty, sympathy is a crime, and in a world of lies, truth is blasphemy.

Do the best that can be done and then . . . be resigned.

I have made up my mind that if there is a God, he will be merciful to the merciful. Upon that rock I stand. That he will not torture the forgiving. Upon that rock I stand. That every man should be true to himself, and that there is no world, no star in which honesty is a crime. Upon that rock I stand.