Plutarch's Rules for the Preservation of Health (18-19)

ZEUXIPPUS. As for what has been said of diet before, if any part of it be profitable in instructing us how we should allay and bring down our appetites, there yet remains one thing more to be advised: that if it be troublesome to treat one’s belly like one broke loose, and to contend with it though it has no ears (as Cato said), then ought we to take care that the quality of what we eat may make the quantity more light; and we should eat cautiously of such food as is solid and most nourishing (for it is hard always to refuse it), such as flesh, cheese, dried figs, and boiled eggs; but more freely of those things which are thin and light, such as moist herbs, fowl, and fish if it be not too fat; for he that eats such things as these may gratify his appetite, and yet not oppress his body. But ill digestion is chiefly to be feared after flesh, for it presently very much clogs us and leaves ill relics behind it. It would be best to accustom one’s self to eat no flesh at all, for the earth affords plenty enough of things fit not only for nourishment, but for delight and enjoyment; some of which you may eat without much preparation, and others you may make pleasant by adding divers other things to them. But since custom is almost a second nature, we may eat flesh, but not to the cloying of our appetites, like wolves or lions, but only to lay as it were a foundation and bulwark for our nourishment, — and then come to other meats and sauces which are more agreeable to the nature of our bodies and do less dull our rational soul, which seems to be enlivened by a light and brisk diet.

ZEUXIPPUS. As for liquids, we should never make milk our drink, but rather take it as food, it yielding much solid nourishment. As for wine, we must say to it what Euripides said to Venus: —

Thy joys with moderation I would have,

And that I ne’er may want them humbly crave.

For wine is the most beneficial of all drinks, the pleasantest medicine in the world, and of all dainties the least cloying to the appetite, provided more regard be given to the opportunity of the time of drinking it than even to its being properly mixed with water. Water, not only when it is mixed with wine, but also if it be drunk by itself between mixed wine and water, makes the mingled wine the less hurtful. We should accustom ourselves therefore in our daily diet to drink two or three glasses of water, which will allay the strength of the wine, and make drinking of water familiar to our body, that so in a case of necessity it may not be looked on as a stranger, and we be offended at it. It so falls out, that some have then the greatest inclination for wine when there is most need they should drink water; for such men, when they have been exposed to great heat of the sun, or have fallen into a chill, or have been speaking vehemently, or have been more than ordinarily thoughtful about any thing, or after any fatigue or labor, are of the opinion that they ought to drink wine, as if nature required some repose for the body and some diversion after its labors. But nature requires no such repose (if you will call pleasure repose), but desires only such an alteration as shall be between pleasure and pain; in which case we ought to abate of our diet, and either wholly abstain from wine, or drink it allayed with very much mixture of water. For wine, being sharp and fiery, increases the disturbances of the body, exasperates them, and wounds the parts affected; which stand more in need of being comforted and smoothed, which water does the best of any thing. If, when we are not thirsty, we drink warm water after labor, exercise, or heat, we find our inward parts loosened and smoothed by it; for the moisture of water is gentle and not violent, but that of wine carries a great force in it, which is no ways agreeable in the fore-mentioned cases. And if any one should be afraid that abstinence would bring upon the bodythat acrimony and bitterness which some say it will, he is like those children who think themselves much wronged because they may not eat just before the fit of a fever. The best mean between both these is drinking of water. We oftentimes sacrifice to Bacchus himself without wine, doing very well in accustoming ourselves not to be always desirous of wine. Minos made the pipe and the crown be laid aside at the sacrifice when there was mourning. And yet we know an afflicted mind is not at all affected by either the pipe or crown; but there is no body so strong, to which, in commotion or a fever, wine does not do a great deal of injury.