Intelligence is quickness to apprehend as distinct form ability, which is capacity to act wisely on the thing apprehended.

A race preserves its vigor so long as it harbors a real contrast between what has been and what may be; and so long as it is nerved by the vigor to adventure beyond the safeties of the past. Without adventure civilization is in full decay.

When you're average, you're just as close to the bottom as you are the top.

The antithesis between a technical and a liberal education is fallacious. There can be no adequate technical education which is not liberal, and no liberal education which is not technical.

That knowledge which adds greatness to character is knowledge so handled as to transform every phase of immediate experience.

The worst that happened to men of science was that Galileo suffered an honorable detention and a mild reproof, before dying peacefully in his bed.

Great people plant trees they'll never sit under.