Love is the cause of unity in all things.

The End is included among goods of the soul, and not among external goods.

Money is a guarantee that we may have what we want in the future. Though we need nothing at the moment it insures the possibility of satisfying a new desire when it arises.

The secret to humor is surprise.

Of the irrational part of the soul again one division appears to be common to all living things, and of a vegetative nature.

Anybody can become angry - that is easy, but to be angry with the right person and to the right degree and at the right time and for the right purpose, and in the right way - that is not within everybody's power and is not easy.

We may assume the superiority ceteris paribus of the demonstration which derives from fewer postulates or hypotheses - in short, from fewer premises.