The President may indeed in one respect resemble the commander of an army in peace, but in another and more essential sense he resembles the commander of a ship at sea. He must have a helm to grasp, a course to steer, a port to seek. He must sooner or later be convinced that a perpetual calm is as little to his purpose as a perpetual hurricane, and that without headway the ship can arrive nowhere.

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

One could not stay a month without loving the shabby town

They know enough who know how to learn.

You say that love is nonsense. I tell you it is no such thing. For weeks and months it is a steady physical pain, an ache about the heart, never leaving one, by night or by day; a long strain on one's nerves like toothache or rheumatism, not intolerable at any one instant, but exhausting by its steady drain on the strength.

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.

Susceptibility to the highest forces is the highest genius.