Life begins perpetually. Gathered together at last under the leadership of man, the student-teacher of the universe... unified, disciplined, armed with the secret powers of the atom, and with knowledge as yet beyond dreaming, Life, forever dying to be born afresh, forever young and eager, will presently stand upon this earth as upon a footstool, and stretch out its realm amidst the stars.

Ch. 41 - The Outline of History (1920)