The right constitutions, three in number- kingship, aristocracy, and polity- and the deviations from these, likewise three in number - tyranny from kingship, oligarchy from aristocracy, democracy from polity.

The seat of the soul and the control of voluntary movement - in fact, of nervous functions in general, - are to be sought in the heart. The brain is an organ of minor importance.

The man with a host of friends who slaps on the back everybody he meets is regarded as the friend of nobody.

...in this way the structure of the universe- I mean, of the heavens and the earth and the whole world- was arranged by one harmony through the blending of the most opposite principles.

A good style must, first of all, be clear. It must not be mean or above the dignity of the subject. It must be appropriate.

Indeed, we may go further and assert that anyone who does not delight in fine actions is not even a good man.

No excellent soul is exempt from a mixture of madness.