Even when laws have been written down, they ought not always to remain unaltered.
It is the nature of desire not to be satisfied, and most men live only for the gratification of it.
He who is unable to live in society, or who has no need because he is sufficient for himself, must be either a beast or a god.
Nature does nothing uselessly.
Man is by nature a political animal.
Above all things, never be afraid. The enemy who forces you to retreat is himself afraid of you at that very moment.
With regard to excellence, it is not enough to know, but we must try to have and use it.
We make war that we may live in peace.