What, then, shall we do? someone may ask. What else, indeed, than devote ourselves to the care of our souls, keeping all our leisure free from other things. Accordingly, we should not be slaves of the body, except so far as is strictly necessary; but our souls we should supply with all things that are best, through philosophy freeing them, as from a prison, from association with the passions of the body.

p. 415 - On Greek Literature