Civilized people are taught by logic, barbarians, by necessity, communities by tradition; and the lesson inculcated even in wild beasts by nature itself. They learn that they have to defend their own bodies and persons lives from violence of any and every kind by all means within their power.

The purpose of education is to free the student from the tyranny of the present.

The world has not yet learned the riches of frugality.

Never injure a friend, even in jest.

It is the soul itself which sees and hears, and not those parts which are, as it were, but windows to the soul.

Let every man practice the art that he knows best.

Democritus maintains that there can be no great poet without a spite of madness.