Man can change his life simply by changing his attitude.

To neglect the wise sayings of great thinkers is to deny ourselves the truest education.

(Five) thinkers since Galileo, each informing his successor of what discoveries his own lifetime had seen achieved, might have passed the torch of science into our hands as we sit here in this room. Indeed, for the matter of that, an audience much smaller than the present one, an audience of some 5 or 6 score people, if each person in it could speak for his own generation, would carry us away to the black unknown of the human species, to days without a document or monument to tell their tale.

An experience, perceptual or conceptual, must conform to reality in order to be true

Compared to what we ought to be, we are only half awake. We are making use of only a small part of our physical and mental resources. Stating the thing broadly, the human individual thus lives far within his limits. He possesses power of various sorts which he habitually fails to use.

Materialism means simply the denial that the moral order is eternal, and the cutting off of ultimate hopes; spiritualism means theaffirmation of an eternal moral order and the letting loose of hope.

A great many people think they are thinking when they are merely rearranging their prejudices.