9. Fret not, neither despond nor be disheartened, if it be not always possible for you to act according to your principles of perfection. If you are beaten off, return again to the effort, and content yourself that your conduct is generally such as becomes a man. Love the good to which you return; and come back to Philosophy, not as one who comes to a master, but as one whose eyes ache recurs to sponge and egg, as another has recourse to plasters, or a third to fomentation. And thus you will make no empty show of obeying reason; but find that it gives you rest. Remember that Philosophy demands no more than what your nature requires. But you are wont to desire other things which accord not with your nature. "For what," you say, "can be more delightful than such things?" Is not this the very snare which Pleasure sets for us? Yet consider if magnanimity, frankness, simplicity, kindness, and piety be not even greater delights. And what is sweeter than wisdom itself, when you are conscious of security and felicity in your powers of apprehension and reason? 10. The natures of things are so covered up from us, that to many philosophers, and these no mean ones, all things seem incomprehensible. The Stoics themselves own that it is difficult to comprehend anything with certainty. All our assent is inconsistent, for where is the consistent man? Consider, too, the objects of our knowledge: how transitory are they, and how mean! How often they are in the possession of the debauchee, of the harlot, of the robber! Review again the morals of your contemporaries: it is scarcely possible to tolerate the best-mannered among them; not to say that a man can scarcely tolerate himself. Amid such darkness and filth, in this perpetual flux of substance, of time, of motion, and of things moved, I can perceive nothing worthy of esteem or of desire. On the contrary, we should comfort ourselves as we await our natural dissolution, and not be vexed at the delay, but find rest in these thoughts: first, that nothing can befall us which is not in accord with the nature of all things; second, that it is always in our power not to do anything against the divine spirit within us: to this no force can compel us. 11. To what end am I using my soul? Let me examine myself as to this on all occasions, and consider what is passing now in that part of me which men call the ruler of the rest. Let me think, too, whose is the soul that I have. Is it a child's? Is it a youth's, a timorous woman's, or a tyrant's; the soul of a tame beast or of a savage one?