[1] From Plutarch to Parcius, ¹ health and prosperity.

It was only very recently that I received your letter in which you urged me to write you something on tranquillity of mind, and also something on those subjects in the Timaeus ² which require more careful elucidation. And at the same time it chanced that our friend Eros ³ was obliged to sail at once for Rome, since he had received from the excellent Fundanus ⁴ a letter, which, in his usual style, urged haste. But since I neither had the time I might have desired to meet your wishes nor could I bring myself to let the friend who carne from me be seen arriving at your home with hands quite empty, I gathered together from my note-books those observations on tranquillity of mind which I happened to have made for my own use, believing that you on your part requested this discourse, not for the sake of hearing a work which would aim at elegance of style, but for the practical use in living it might afford; and I congratulate you because, though you have commanders as your friends and a reputation second to none of the forensic speakers of our day, your experience has not been that of Merops in the play, and because it cannot be said of you, as of him, that from those emotions given us by nature; but you continue to remember what you have often heard, that an aristocratic shoe does not rid us of the gout, nor an expensive ring of a hangnail, nor a diadem of a headache. For what power is there in money or fame or influence at court to help us to gain ease of soul or an untroubled life, if it is not true that the use of them is pleasant to us when we have them and that we never miss them when we have them not? ⁶ And how else can this be achieved except through reason, which has been carefully trained quickly to hold back the passionate and irrational part of the soul when it breaks bounds, as it often does, and not to allow it to flow away and be swept downstream because it does not have what it wants? Therefore, just as Xenophon ⁷ advised that in prosperity we should be particularly mindful of the gods and should honour them, so that, when some need comes upon us, we may invoke them with the confidence that they are already well-disposed and friendly; so also with such reasonings as give help in controlling the passions: wise men should give heed to them before the passions arise in order that, being prepared far in advance, their help may be more efficacious. For as savage dogs become excited at every strange cry and are soothed by the familiar voice only, so also the passions of the soul, when they are raging wild, are not easily allayed, unless customary and familiar arguments are at hand to curb the excited passions.

It was late before I received your letter, wherein you make it your request that I would write something to you concerning the tranquillity of the mind, and of those things in the Timaeus which require a more perspicuous interpretation. At the same time a very urgent occasion called upon our common friend and companion Eros to sail directly to Rome; that which quickened him to a greater expedition was a dispatch he received from Fundanus, that best of men, who, as his custom is, always enjoins the making haste. Therefore, wanting full leisure to consummate those things justly which you requested, and being on the other side unwilling to send one from me to your dear self empty handed, I have transcribed my commonplace book, and hastily put together those collections which I had by me concerning this subject; for I thought you a man that did not look after flourishes of style and the affected elegance of language, but only required what was instructive in its nature and useful to us in the conduct of our lives. And I congratulate that bravery of temper in you, that though you are admitted into the confidence of princes, and have obtained so great a vogue of eloquence at the bar that no man hath exceeded you, you have not, like the tragic Merops, suffered yourself to be puffed up with the applause of the multitude, and transported beyond those bounds which are prescribed to our passions; but you call to mind that which you have so often heard, that a rich slipper will not cure the gout, a diamond ring a whitlow, nor will an imperial diadem ease the headache. For what advantage is there in honor, riches, or an interest at court, to remove all perturbations of mind and procure an equal tenor of life, if we do not use them with decency when they are present to our enjoyment, and if we are continually afflicted by their loss when we are deprived of them? And what is this but the province of reason, when the sensual part of us grows turbulent and makes excursions, to check its sallies and bring it again within the limits it hath transgressed, that it may not be carried away and so perverted with the gay appearances of things. For as Xenophon gives advice, we ought to remember the Gods and pay them particular devotions when our affairs are prosperous, that so when an exigency presseth us we may more confidently invoke them, now we have conciliated their favor and made them our friends. So wise men always ruminate upon those arguments which have any efficacy against the troubles of the mind before their calamities happen, that so the remedies being long prepared, they may acquire energy, and work with a more powerful operation. For as angry dogs are exasperated by every one’s rating them, and are flattered to be quiet only by his voice to which they are accustomed; so it is not easy to pacify the brutish affections of the soul but by familiar reasons, and such as are used to be administered in such inward distempers.