I tell you the solemn truth, that the doctrine of the Trinity is not so difficult to accept for a working proposition as any one of the axioms of physics.

If one shed tears, they must be shed on one's pillow.

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.

Simplicity is the most deceitful mistress that ever betrayed man.

Analogies are figures intended to serve as fatal weapons if they succeed, and as innocent toys if they fail.

Laplace would have found it child's-play to fix a ratio of progression in mathematical science between Descartes, Leibnitz, Newton and himself

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