Plutarch's Rules for the Preservation of Health (6-7)

ZEUXIPPUS. First, Socrates advises us to beware of such meats as persuade a man to eat them though he be not hungry, and of those drinks that would prevail with a man to drink them when he is not thirsty. Not that he absolutely forbade us the use of them; but he taught that we might use them where there was occasion for it, suiting the pleasure of them to our necessity, as cities converted the money which was designed for the festivals into a supply for war. For that which is agreeable by nature, so long as it is a part of our nourishment, is proper for us. He that is hungry should eat necessary food and find it pleasant; but when he is freed from his common appetite, he ought not to raise up a fresh one. For, as dancing was no unpleasant exercise to Socrates himself, so he that can make his meal of sweetmeats or a second course receives the less damage. But he that has taken already what may sufficiently satisfy his nature ought by all means to avoid them. And concerning these things, indecorum and ambition are no less to be avoided than the love of pleasure or gluttony. For these often persuade men to eat without hunger or drink without thirst, possessing them with base and troublesome fancies, as if it were indecent not to taste of every thing which is either a rarity or of great price, as udder, Italian mushrooms, Samian cakes, or snow in Egypt. Again, these often incite men to eat things rare and much talked of, they being led to it, as it were, by the scent of vain-glory, and making their bodies to partake of them without any necessity of it, that they may have something to tell others, who shall admire their having eaten such rare and superfluous things. And thus it is with them in relation to fine women; when they are in bed with their own wives, however beautiful and loving they may be, they are no way concerned; but on Phryne or Lais they bestow their money, inciting an infirm and unfit body, and provoking it to intemperate pleasures, and all this out of a vain-glorious humor. Phryne herself said in her old age, that she sold her lees and dregs the dearer because she had been in such repute when she was young.

ZEUXIPPUS. It is indeed a great and miraculous thing that, if we allow the body all the pleasures which nature needs and can bear, — or rather, if we struggle against its appetites on most occasions and put it off, and are at last brought with difficulty to yield to its necessities, or (as Plato saith) give way when it bites and strains itself, — after all we should come off without harm. But, on the other hand, those desires which descend from the mind into the body, and urge and force it to obey and accompany them in all their motions and affections, must of necessity leave behind them the greatest and severest ills, as the effects of such infirm and dark delights. The desire of our mind ought no ways to incite our bodies to any pleasure, for the beginning of this is against nature. And as the tickling of one’s armpits forces a laughter, which is neither moderate nor merry, nor indeed properly a laughter, but rather troublesome and like convulsions; so those pleasures which the molested and disturbed body receives from the mind are furious, troublesome, and wholly strangers to nature. Therefore when any rare or noble dish is before you, you will get more honor by refraining from it than partaking of it. Remember what Simonides said, that he never repented that he had held his tongue, but often that he had spoken; so we shall not repent that we have refused a good dish or drunk water instead of Falernian, but the contrary. We are not only to commit no violence on Nature; but when any of those things are offered to her, even if she has a desire for them, we ought oftentimes to direct the appetite to a more innocent and accustomed diet, that she may be used to it and acquainted with it; for as the Theban said (though not over honestly), If the law must be violated, it looks best when it is done for an empire.[*] But we say better, if we are to take pride in any such thing, it is best when it is in that moderation which conduces to our health. But a narrowness of soul and a stingy humor compel some men to keep under and defraud their genius at home, who, when they enjoy the costly fare of another man’s table, do cram themselves as eagerly as if it were all plunder; then they are taken ill, go home, and the next day find the crudity of their stomachs the reward of their unsatiableness. Wherefore Crates, supposing that luxury and prodigality were the chief cause of seditions and insurrections in a city, in a droll advises that we should never go beyond a lentil in our meals, lest we bring ourselves into sedition. But let every one exhort himself not to increase his meal beyond a lentil, and not to pass by cresses and olives and fall upon pudding and fish, that he may not by his over-eating bring his body into tumults, disturbances, and diarrhoeas; for a mean diet keeps the appetite within its natural bounds, but the arts of cooks and confectioners, with their elaborate dishes and aromatic sauces, do (according to the comedian) push forward and enlarge the bounds of pleasure, and entrench upon those of our profit. I know not how it comes to pass that we should abominate and hate those women that either bewitch or give philters to their husbands, and yet give our meat and drink to our slaves and hirelings, to all but corrupt and poison them. For though that may seem too severe which was said by Arcesilaus against lascivious and adulterous persons, that it signifies little which way one goes about such beastly work;[*] yet it is not much from our purpose. For what difference is there (to speak ingenuously) whether satyrion moves and whets my lust, or my taste is irritated by the scent of the meat or the sauce, so that, like a part infected with itch, it shall always need scratching and tickling?