As physicians have always their instruments and knives ready for cases which suddenly require their skill, so do thou have principles ready for the understanding of things divine and human, and for doing everything, even the smallest, with a recollection of the bond which unites the divine and human to one another. For neither wilt thou do anything well which pertains to man without at the same time having a reference to things divine; nor the contrary.
Body, soul, intelligence: to the body belong sensations, to the soul appetites, to the intelligence principles. To receive the impressions of forms by means of appearances belongs even to animals; to be pulled by the strings of desire belongs both to wild beasts and to men who have made themselves into women, and to a Phalaris and a Nero: and to have the intelligence that guides to the things which appear suitable belongs also to those who do not believe in the gods, and who betray their country, and do their impure deeds when they have shut the doors. If then everything else is common to all that I have mentioned, there remains that which is peculiar to the good man, to be pleased and content with what happens, and with the thread which is spun for him; and not to defile the divinity which is planted in his breast, nor disturb it by a crowd of images, but to preserve it tranquil, following it obediently as a god, neither saying anything contrary to the truth, nor doing anything contrary to justice. And if all men refuse to believe that he lives a simple, modest, and contented life, he is neither angry with any of them, nor does he deviate from the way which leads to the end of life, to which a man ought to come pure, tranquil, ready to depart, and without any compulsion perfectly reconciled to his lot.
Men seek retreats for themselves, houses in the country, sea-shores, and mountains; and thou too art wont to desire such things very much. But this is altogether a mark of the most common sort of men, for it is in thy power whenever thou shalt choose to retire into thyself. For nowhere either with more quiet or more freedom from trouble does a man retire than into his own soul, particularly when he has within him such thoughts that by looking into them he is immediately in perfect tranquility; and I affirm that tranquility is nothing else than the good ordering of the mind. Constantly then give to thyself this retreat, and renew thyself; and let thy principles be brief and fundamental, which, as soon as thou shalt recur to them, will be sufficient to cleanse the soul completely, and to send thee back free from all discontent with the things to which thou returnest. For with what art thou discontented? With the badness of men? Recall to thy mind this conclusion, that rational animals exist for one another, and that to endure is a part of justice, and that men do wrong involuntarily; and consider how many already, after mutual enmity, suspicion, hatred, and fighting, have been stretched dead, reduced to ashes; and be quiet at last.- But perhaps thou art dissatisfied with that which is assigned to thee out of the universe.- Recall to thy recollection this alternative; either there is providence or atoms, fortuitous concurrence of things; or remember the arguments by which it has been proved that the world is a kind of political community, and be quiet at last.- But perhaps corporeal things will still fasten upon thee.- Consider then further that the mind mingles not with the breath, whether moving gently or violently, when it has once drawn itself apart and discovered its own power, and think also of all that thou hast heard and assented to about pain and pleasure, and be quiet at last.- But perhaps the desire of the thing called fame will torment thee.- See how soon everything is forgotten, and look at the chaos of infinite time on each side of the present, and the emptiness of applause, and the changeableness and want of judgement in those who pretend to give praise, and the narrowness of the space within which it is circumscribed, and be quiet at last. For the whole earth is a point, and how small a nook in it is this thy dwelling, and how few are there in it, and what kind of people are they who will praise thee.
Within ten days thou wilt seem a god to those to whom thou art now a beast and an ape, if thou wilt return to thy principles and the worship of reason.
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?
Dost thou not see how the handicraftsmen accommodate themselves up to a certain point to those who are not skilled in their craft- nevertheless they cling to the reason (the principles) of their art and do not endure to depart from it? Is it not strange if the architect and the physician shall have more respect to the reason (the principles) of their own arts than man to his own reason, which is common to him and the gods?
How can our principles become dead, unless the impressions (thoughts) which correspond to them are extinguished? But it is in thy power continuously to fan these thoughts into a flame. I can have that opinion about anything, which I ought to have. If I can, why am I disturbed? The things which are external to my mind have no relation at all to my mind.- Let this be the state of thy affects, and thou standest erect. To recover thy life is in thy power. Look at things again as thou didst use to look at them; for in this consists the recovery of thy life.
This reflection also tends to the removal of the desire of empty fame, that it is no longer in thy power to have lived the whole of thy life, or at least thy life from thy youth upwards, like a philosopher; but both to many others and to thyself it is plain that thou art far from philosophy. Thou hast fallen into disorder then, so that it is no longer easy for thee to get the reputation of a philosopher; and thy plan of life also opposes it. If then thou hast truly seen where the matter lies, throw away the thought, How thou shalt seem to others, and be content if thou shalt live the rest of thy life in such wise as thy nature wills. Observe then what it wills, and let nothing else distract thee; for thou hast had experience of many wanderings without having found happiness anywhere, not in syllogisms, nor in wealth, nor in reputation, nor in enjoyment, nor anywhere. Where is it then? In doing what man's nature requires. How then shall a man do this? If he has principles from which come his affects and his acts. What principles? Those which relate to good and bad: the belief that there is nothing good for man, which does not make him just, temperate, manly, free; and that there is nothing bad, which does not do the contrary to what has been mentioned.
Constantly and, if it be possible, on the occasion of every impression on the soul, apply to it the principles of Physic, of Ethic, and of Dialectic.
What is thy art? To be good. And how is this accomplished well except by general principles, some about the nature of the universe, and others about the proper constitution of man?
In the application of thy principles thou must be like the pancratiast, not like the gladiator; for the gladiator lets fall the sword which he uses and is killed; but the other always has his hand, and needs to do nothing else than use it.