I am of opinion that there is nothing so beautiful but that there is something still more beautiful, of which this is the mere image and expression,--a something which can neither be perceived by the eyes, the ears, nor any of the senses; we comprehend it merely in the imagination.

The roots of knowledge are bitter, but its fruit are sweet.

When you wish to instruct, be brief; that men's [children's] minds take in quickly what you say, learn its lesson, and retain it faithfully. Every word that is unnecessary only pours over the side of a brimming mind.

All soils are not fertile.

If our lives are endangered by plots or violence or armed robbers or enemies, any and every method of protecting ourselves is morally right.

Who does not know that the first law of historical writing is the truth.

Whatever you do, do with all your might.