In [the soul] one part naturally rules, and the other is subject, and the virtue of the ruler we maintain to be different from that of the subject; the one being the virtue of the rational, and the other of the irrational part. Now, it is obvious that the same principle applies generally, and therefore almost all things rule and are ruled according to nature.

And this activity alone would seem to be loved for its own sake; for nothing arises from it apart from the contemplating, while from practical activities we gain more or less apart from the action. And happiness is thought to depend on leisure; for we are busy that we may have leisure, and make war that we may live in peace.

We should venture on the study of every kind of animal without distaste; for each and all will reveal to us something natural and something beautiful.

For though we love both the truth and our friends, piety requires us to honor the truth first.

Bashfulness is an ornament to youth, but a reproach to old age.

I seek to bring forth what you almost already know.

The first principle of all action is leisure.