I have hardly ever known a mathematician who was capable of reasoning.

Bodily exercise, when compulsory, does no harm to the body; but knowledge which is acquired under compulsion obtains no hold on the mind.

The people have always some champion whom they set over them and nurse into greatness…This and no other is the root from which a tyrant springs; when he first appears he is a protector.

There are three arts which are concerned with all things: one which uses, another which makes, and a third which imitates them.