In the temple of science are many mansions, and various indeed are they that dwell therein and the motives that have led them thither. Many take to science out of a joyful sense of superior intellectual power; science is their own special sport to which they look for vivid experience and the satisfaction of ambition; many others are to be found in the temple who have offered the products of their brains on this altar for purely utilitarian purposes.

The true sign of intelligence is not knowledge but imagination.

The health of society thus depends quite as much on the independence of the individuals composing it as on their close political cohesion.

[Mystery] is the fundamental emotion that stands at the cradle of true art and true science.

Joy in looking and comprehending is nature's most beautiful gift.

Not until the creation and maintenance of decent conditions of life for all men are recognized and accepted as a common obligation of all men and all countries — not until then shall we, with a certain degree of justification, be able to speak of mankind as civilized.

Compound interest on debt was the banker's greatest invention, to capture, and enslave, a productive society.