The fear of God is not the beginning of wisdom. The fear of God is the death of wisdom. Skepticism and doubt lead to study and investigation, and investigation is the beginning of wisdom.

I feel as I always have, that the earth is the home and the only home of man, and I am convinced that whatever he is to get out of his existence he must get while he is here.

It’s not bad people I fear so much as good people. When a person is sure that he is good, he is nearly hopeless; he gets cruel- he believes in punishment.

History repeats itself. That's one of the things wrong with history.

The ability and inclination to use physical strength is no indication of bravery or tenacity to life. The greatest cowards are often the greatest bullies. Nothing is cheaper and more common than physical bravery.

It must always be remembered that all laws are naturally and inevitably evolved by the strongest force in a community, and in the last analysis made for the protection of the dominant class.

Freedom comes from human beings, rather than from laws and institutions.