All prayers die in the air which they uselessly agitate.

If I go to heaven I want to take my reason with me.

Colleges are places where pebbles are polished and diamonds are dimmed.

Only a few years ago there was no person too ignorant to successfully answer Charles Darwin; and the more ignorant he was the more cheerfully he undertook the task.

They say: Belief is important. I say: No, actions are important. Judge by deed, not by creed.

Joy is wealth and love is the legal tender of the soul.

The first duty of man is to support himself - to see to it that he does not become a burden. His next duty is to help others if he has a surplus, and if he really believes they deserve to be helped.