From Diognetus, not to busy myself about trifling things, and not to give credit to what was said by miracle-workers and jugglers about incantations and the driving away of daemons and such things; and not to breed quails for fighting, nor to give myself up passionately to such things; and to endure freedom of speech; and to have become intimate with philosophy; and to have been a hearer, first of Bacchius, then of Tandasis and Marcianus; and to have written dialogues in my youth; and to have desired a plank bed and skin, and whatever else of the kind belongs to the Grecian discipline.
From Apollonius I learned freedom of will and undeviating steadiness of purpose; and to look to nothing else, not even for a moment, except to reason; and to be always the same, in sharp pains, on the occasion of the loss of a child, and in long illness; and to see clearly in a living example that the same man can be both most resolute and yielding, and not peevish in giving his instruction; and to have had before my eyes a man who clearly considered his experience and his skill in expounding philosophical principles as the smallest of his merits; and from him I learned how to receive from friends what are esteemed favours, without being either humbled by them or letting them pass unnoticed.
From my brother Severus, to love my kin, and to love truth, and to love justice; and through him I learned to know Thrasea, Helvidius, Cato, Dion, Brutus; and from him I received the idea of a polity in which there is the same law for all, a polity administered with regard to equal rights and equal freedom of speech, and the idea of a kingly government which respects most of all the freedom of the governed; I learned from him also consistency and undeviating steadiness in my regard for philosophy; and a disposition to do good, and to give to others readily, and to cherish good hopes, and to believe that I am loved by my friends; and in him I observed no concealment of his opinions with respect to those whom he condemned, and that his friends had no need to conjecture what he wished or did not wish, but it was quite plain.
Every moment think steadily as a Roman and a man to do what thou hast in hand with perfect and simple dignity, and feeling of affection, and freedom, and justice; and to give thyself relief from all other thoughts. And thou wilt give thyself relief, if thou doest every act of thy life as if it were the last, laying aside all carelessness and passionate aversion from the commands of reason, and all hypocrisy, and self-love, and discontent with the portion which has been given to thee. Thou seest how few the things are, the which if a man lays hold of, he is able to live a life which flows in quiet, and is like the existence of the gods; for the gods on their part will require nothing more from him who observes these things.
This thou must always bear in mind, what is the nature of the whole, and what is my nature, and how this is related to that, and what kind of a part it is of what kind of a whole; and that there is no one who hinders thee from always doing and saying the things which are according to the nature of which thou art a part.
This then remains: Remember to retire into this little territory of thy own, and above all do not distract or strain thyself, but be free, and look at things as a man, as a human being, as a citizen, as a mortal. But among the things readiest to thy hand to which thou shalt turn, let there be these, which are two. One is that things do not touch the soul, for they are external and remain immovable; but our perturbations come only from the opinion which is within. The other is that all these things, which thou seest, change immediately and will no longer be; and constantly bear in mind how many of these changes thou hast already witnessed. The universe is transformation: life is opinion.
Be not disgusted, nor discouraged, nor dissatisfied, if thou dost not succeed in doing everything according to right principles; but when thou bast failed, return back again, and be content if the greater part of what thou doest is consistent with man's nature, and love this to which thou returnest; and do not return to philosophy as if she were a master, but act like those who have sore eyes and apply a bit of sponge and egg, or as another applies a plaster, or drenching with water. For thus thou wilt not fail to obey reason, and thou wilt repose in it. And remember that philosophy requires only the things which thy nature requires; but thou wouldst have something else which is not according to nature.- It may be objected, Why what is more agreeable than this which I am doing?- But is not this the very reason why pleasure deceives us? And consider if magnanimity, freedom, simplicity, equanimity, piety, are not more agreeable. For what is more agreeable than wisdom itself, when thou thinkest of the security and the happy course of all things which depend on the faculty of understanding and knowledge?
Neither is transpiration, as in plants, a thing to be valued, nor respiration, as in domesticated animals and wild beasts, nor the receiving of impressions by the appearances of things, nor being moved by desires as puppets by strings, nor assembling in herds, nor being nourished by food; for this is just like the act of separating and parting with the useless part of our food. What then is worth being valued? To be received with clapping of hands? No. Neither must we value the clapping of tongues, for the praise which comes from the many is a clapping of tongues. Suppose then that thou hast given up this worthless thing called fame, what remains that is worth valuing? This in my opinion, to move thyself and to restrain thyself in conformity to thy proper constitution, to which end both all employments and arts lead. For every art aims at this, that the thing which has been made should be adapted to the work for which it has been made; and both the vine-planter who looks after the vine, and the horse-breaker, and he who trains the dog, seek this end. But the education and the teaching of youth aim at something. In this then is the value of the education and the teaching. And if this is well, thou wilt not seek anything else. Wilt thou not cease to value many other things too? Then thou wilt be neither free, nor sufficient for thy own happiness, nor without passion. For of necessity thou must be envious, jealous, and suspicious of those who can take away those things, and plot against those who have that which is valued by thee. Of necessity a man must be altogether in a state of perturbation who wants any of these things; and besides, he must often find fault with the gods. But to reverence and honour thy own mind will make thee content with thyself, and in harmony with society, and in agreement with the gods, that is, praising all that they give and have ordered.
The ruling faculty does not disturb itself; I mean, does not frighten itself or cause itself pain. But if any one else can frighten or pain it, let him do so. For the faculty itself will not by its own opinion turn itself into such ways. Let the body itself take care, if it can, that is suffer nothing, and let it speak, if it suffers. But the soul itself, that which is subject to fear, to pain, which has completely the power of forming an opinion about these things, will suffer nothing, for it will never deviate into such a judgement. The leading principle in itself wants nothing, unless it makes a want for itself; and therefore it is both free from perturbation and unimpeded, if it does not disturb and impede itself.
Nature has not so mingled the intelligence with the composition of the body, as not to have allowed thee the power of circumscribing thyself and of bringing under subjection to thyself all that is thy own; for it is very possible to be a divine man and to be recognised as such by no one. Always bear this in mind; and another thing too, that very little indeed is necessary for living a happy life. And because thou hast despaired of becoming a dialectician and skilled in the knowledge of nature, do not for this reason renounce the hope of being both free and modest and social and obedient to God.
It is in thy power to live free from all compulsion in the greatest tranquility of mind, even if all the world cry out against thee as much as they choose, and even if wild beasts tear in pieces the members of this kneaded matter which has grown around thee. For what hinders the mind in the midst of all this from maintaining itself in tranquility and in a just judgement of all surrounding things and in a ready use of the objects which are presented to it, so that the judgement may say to the thing which falls under its observation: This thou art in substance (reality), though in men's opinion thou mayest appear to be of a different kind; and the use shall say to that which falls under the hand: Thou art the thing that I was seeking; for to me that which presents itself is always a material for virtue both rational and political, and in a word, for the exercise of art, which belongs to man or God. For everything which happens has a relationship either to God or man, and is neither new nor difficult to handle, but usual and apt matter to work on.
Remember that to change thy opinion and to follow him who corrects thy error is as consistent with freedom as it is to persist in thy error. For it is thy own, the activity which is exerted according to thy own movement and judgement, and indeed according to thy own understanding too.
Suppose that men kill thee, cut thee in pieces, curse thee. What then can these things do to prevent thy mind from remaining pure, wise, sober, just? For instance, if a man should stand by a limpid pure spring, and curse it, the spring never ceases sending up potable water; and if he should cast clay into it or filth, it will speedily disperse them and wash them out, and will not be at all polluted. How then shalt thou possess a perpetual fountain and not a mere well? By forming thyself hourly to freedom conjoined with contentment, simplicity and modesty.
Let there be freedom from perturbations with respect to the things which come from the external cause; and let there be justice in the things done by virtue of the internal cause, that is, let there be movement and action terminating in this, in social acts, for this is according to thy nature.
Either the gods have no power or they have power. If, then, they have no power, why dost thou pray to them? But if they have power, why dost thou not pray for them to give thee the faculty of not fearing any of the things which thou fearest, or of not desiring any of the things which thou desirest, or not being pained at anything, rather than pray that any of these things should not happen or happen? for certainly if they can co-operate with men, they can co-operate for these purposes. But perhaps thou wilt say, the gods have placed them in thy power. Well, then, is it not better to use what is in thy power like a free man than to desire in a slavish and abject way what is not in thy power? And who has told thee that the gods do not aid us even in the things which are in our power? Begin, then, to pray for such things, and thou wilt see. One man prays thus: How shall I be able to lie with that woman? Do thou pray thus: How shall I not desire to lie with her? Another prays thus: How shall I be released from this? Another prays: How shall I not desire to be released? Another thus: How shall I not lose my little son? Thou thus: How shall I not be afraid to lose him? In fine, turn thy prayers this way, and see what comes.
The things are three of which thou art composed, a little body, a little breath (life), intelligence. Of these the first two are thine, so far as it is thy duty to take care of them; but the third alone is properly thine. Therefore if thou shalt separate from thyself, that is, from thy understanding, whatever others do or say, and whatever thou hast done or said thyself, and whatever future things trouble thee because they may happen, and whatever in the body which envelops thee or in the breath (life), which is by nature associated with the body, is attached to thee independent of thy will, and whatever the external circumfluent vortex whirls round, so that the intellectual power exempt from the things of fate can live pure and free by itself, doing what is just and accepting what happens and saying the truth.