We act as though comfort and luxury were the chief requirements of life. All that we need to make us happy is something to be enthusiastic about.

The right to search for truth implies also a duty.

Freedom of teaching and of opinion in book or press is the foundation for the sound and natural development of any people.

The fairest thing we can experience is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science. It is the source of all true art and science. He who knows it not and can no longer wonder, no longer feel amazement, is as good as dead, a snuffed-out candle.

The laws of gravity cannot be held responcible for people falling in love.

Thought is the organizing factor in man, intersected between the causal primary instincts and the resulting actions.

If men as individuals surrender to the call of their elementary instincts, avoiding pain and seeking satisfaction only for their own selves, the result for them all taken together must be a state of insecurity, of fear, and of promiscuous misery.