Chaos was the law of nature; Order was the dream of man.

Absolute liberty is absence of restraint; responsibility is restraint; therefore, the ideally free individual is responsible to himself.

If Thought is capable of being classed with Electricity, or Will with chemical affinity, as a mode of motion, it seems necessary to fall at once under the second law of thermodynamics as one of the energies which most easily degrades itself, and, if not carefully guarded, returns bodily to the cheaper form called Heat. Of all possible theories, this is likely to prove the most fatal to Professors of History.

Of all studies, the one he would rather have avoided was that of his own mind. He knew no tragedy so heartrending as introspection.

Power is poison. Its effect on Presidents had always been tragic.

History will die if not irritated. The only service I can do to my profession is to serve as a flea.

Nothing in education is so astonishing as the amount of ignorance it accumulates in the form of inert facts.