8 But if you disbelieve my statement study the physical condition, and the soul of each class. Are not the bodies vigorous of those who live thus moderately (for do not tell me of that which rarely happens, although some may be weak from some other circumstance, but form your judgment from those instances which are of constant occurrence), I say are they not vigorous, and their senses clear, fulfilling their proper function with much ease? Whereas the bodies of the others are flaccid and softer than wax, and beset with a crowd of maladies? For gout soon fastens upon them, and untimely palsy, and premature old age, and headache, and flatulence, and feebleness of digestion, and loss of appetite, and they require constant attendance of physicians, and perpetual doseing, and daily care. Are these things pleasurable? Tell me. Who of those that know what pleasure really is would say so? For pleasure is produced when desire leads the way, and fruition follows: now if there is fruition, but desire is nowhere to be found, the conditions of pleasure fail and vanish. On this account also invalids, although the most charming food is set before them, partake of it with a feeling of disgust and sense of oppression: because there is no desire which gives a keen relish to the enjoyment of it. For it is not the nature of the food, or of the drink, but the appetite of the eaters which is wont to produce the desire, and is capable of causing pleasure. Therefore also a certain wise man who had an accurate knowledge of all that concerned pleasure, and understood how to moralize about these things said “the full soul mocks at honeycombs:” showing that the conditions of pleasure consist not in the nature of the meal, but in the disposition of the eaters. Therefore also the prophet recounting the wonders in Egypt and in the desert mentioned this in connection with the others “He satisfied them with honey out of the rock.” And yet nowhere does it appear that honey actually sprang forth for them out of the rock: what then is the meaning of the expression? Because the people being exhausted by much toil and long travelling, and distressed by great thirst rushed to the cool spring, their craving for drink serving as a relish, the writer wishing to describe the pleasures which they received from those fountains called the water honey, not meaning that the element was converted into honey, but that the pleasure received from the water rivalled the sweetness of honey, inasmuch as those who partook of it rushed to it in their eagerness to drink.
Since then these things are so and no one can deny it, however stupid he may be: is it not perfectly plain that pure, undiluted, and lively pleasure is to be found at the tables of the poor? Whereas at the tables of the rich there is discomfort, and disgust and defilement? As that wise man has said “even sweet things seem to be a vexation.”
Source: No One Can Harm the Man Who Does Not Injure Himself (New Advent)