Philosophy begins in wonder.

For all good and evil, whether in the body or in human nature, originates ... in the soul, and overflows from thence, as from the head into the eyes.

If the head and the body are to be well, you must begin by curing the soul.

Great parts produce great vices as well as virtues.

If a man says that it is right to give every one his due, and therefore thinks within his own mind that injury is due from a just man to his enemies but kindness to his friends, he was not wise who said so, for he spoke not the truth, for in no case has it appeared to be just to injure any one.

Evil is the vulgar lover who loves the body rather than the soul, inasmuch as he is not even stable, because he loves a thing which is in itself unstable, and therefore when the bloom of youth which he was desiring is over, he takes wing and flies away, in spite of all his words and promises; whereas the love of the noble disposition is life-long, for it becomes one with the everlasting.

The tyranny imposed on the soul by anger, or fear, or lust, or pain, or envy, or desire, I generally call 'injustice.'