In obedience to God then he went about purging away injustice and lawlessness. But you are not Hercules and you are not able to purge away the wickedness of others; nor yet are you Theseus, able to purge away the evil things of Attica Clear away your own. From yourself, from your thoughts cast away instead of Procrustes and Sciron, sadness, fear, desire, envy, malevolence, avarice, effeminacy, intemperance. But it is not possible to eject these things otherwise than by looking to God only, by fixing your affections on him only, by being consecrated to his commands. But if you choose any thing else, you will with sighs and groans be compelled to follow what is stronger than yourself, always seeking tranquillity and never able to find it; for you seek tranquillity there where it is not, and you neglect to seek it where it is.
The quote: WHAT is the first business of him who philosophizes? To throw away self-conceit (οἴησις). For it is impossible for a man to begin to learn that which he thinks that he knows.
As to things then which ought to be done and ought not to be done, and good and bad, and beautiful and ugly, all of us talking of them at random go to the philosophers; and on these matters we praise, we censure, we accuse, we blame, we judge and determine about principles honourable and dishonourable. But why do we go to the philosophers? Because we wish to learn what we do not think that we know. And what is this? Theorems. For we wish to learn what philosophers say as being something elegant and acute; and some wish to learn that they may get profit from what they learn.