If anyone went on for a thousand years asking of life: "Why are you living?" life, if it could answer, would only say, "I live so that I may live." That is because life lives out of its own ground and springs from its own source, and so it lives without asking why it is itself living.
A human being has so many skins inside, covering the depths of the heart. We know so many things, but we don't know ourselves! Why, thirty or forty skins or hides, as thick and hard as an ox's or bear's, cover the soul. Go into your own ground and learn to know yourself there.
If I had a friend and loved him because of the benefits which this brought me and because of getting my own way, then it would not be my friend that I loved but myself. I should love my friend on account of his own goodness and virtues and account of all that he is in himself. Only if I love my friend in this way do I love him properly.