Some day science may have the existence of mankind in its power, and the human race commit suicide, by blowing up the world.

Politics cannot stop to study psychology Its methods are rough; its judgments rougher still.

Man is an imperceptible atom always trying to become one with God.

In correct theology, the Virgin ought not to be represented in bed, for she could not suffer like ordinary women, but her palace at Chartres is not much troubled by theology, and to her, as empress-mother, the pain of child-birth was a pleasure which she wanted her people to share.

I firmly believe, that before many centuries more, science will be the master of man. The engines he will have invented will be beyond his strength to control. Someday, science shall have the existence of mankind in its power, and the human race commit suicide by blowing up the world.

American politics is a struggle, not of men but of forces. The men become every year more and more creatures of force, massed about central power houses.

After Gibbs, one the most distinguished [American scientists] was Langley, of the Smithsonian. ... He had the physicist's heinous fault of professing to know nothing between flashes of intense perception. ... Rigidly denying himself the amusement of philosophy, which consists chiefly in suggesting unintelligible answers to insoluble problems, and liked to wander past them in a courteous temper, even bowing to them distantly as though recognizing their existence, while doubting their respectibility.