Style, in its finest sense, is the last acquirement of the educated mind; it is also the most useful. It pervades the whole being.

No man of science wants merely to know. He acquires knowledge to appease his passion for discovery. He does not discover in order to know, he knows in order to discover.

Imagination is not to be divorced from the facts. It is a way of illuminating the facts.

The great achievements of the past were the adventures of the past. Only the adventurous can understand the greatness of the past.

The future belongs to those who can rise above the confines of the earth.

Identification of rhythm as the casual counterpart of life; wherever there is some life, only perceptible to us when the analogies are sufficiently close.

The motive of success is not enough.