Moral good is a practical stimulus; it is no sooner seen than it inspires an impulse to practice.

Nothing made the horse so fat as the king's eye.

Words will build no walls.

Gout is not relieved by a fine shoe nor a hangnail by a costly ring nor migraine by a tiara.

Know how to listen, and you will profit even from those who talk badly.

It is no flattery to give a friend a due character; for commendation is as much the duty of a friend as reprehension.

This excerpt is presented as reproduced by Copernicus in the preface to De Revolutionibus: "Some think that the earth remains at rest. But Philolaus the Pythagorean believes that, like the sun and moon, it revolves around the fire in an oblique circle. Heraclides of Pontus and Ecphantus the Pythagorean make the earth move, not in a progressive motion, but like a wheel in rotation from west to east around its own center."