Friendship was given by nature to be an assistant to virtue, not a companion in vice.

No one has the right to be sorry for himself for a misfortune that strikes everyone.

Philosophy is the true mother of science.

It is difficult to persuade mankind that the love of virtue is the love of themselves.

A war is never undertaken by the ideal state, except in defense of its honor or its safety.

There is no fortune so strong that money cannot take it.

The spirit is the true self.