What would Thomas Aquinas think of a world where one American adult in nine has bought their way out of hunger — the oldest appetite there is, switched off weekly by injection, marketed as health, resented as cheating, and moralized over by everyone except the man who defined the sin? He answered this around 1272. He sat down — an enormous man, silent in class, mocked by his own classmates as the Dumb Ox — and wrote six articles on gluttony, and in all six he never once mentions the size of a body. Gluttony is not eating too much. Gluttony is disordered desire, and it is not the food but the wanting that is at fault. Then he lists five ways to commit it, and only one of the five has anything to do with quantity. The sin was never in the flesh. It was in the appetite — and he wrote that as the fattest man in the room. Seven centuries took that idea and did the one thing to it he had specifically refused to do: they moved the sin out of the desire and into the body. Kept the shame, threw away the definition. He put the fault somewhere a person could actually do something about — in the wanting, which is invisible, and adjustable, and nobody else's business. We put it somewhere a person can only be looked at. He judged the appetite so the man could go free; we judge the man and call it concern. Same word, opposite target. He aimed it at the hunger. We aim it at the hungry, and then we call the aiming health. And he'd know the mechanism cold, because he built it. Temperance, in his system, is not the will beating the appetite into submission — that's continence, and he ranked it lower. The higher state is the one where the appetite is already quiet and there is no fight at all, which is precisely what people on the drug describe: not victory, just silence. He wrote the exemption in advance, too — reducing appetite for the sake of the body's health, he says plainly, is right reason and no vice whatsoever. And then, in the same passage, the trap. There is a sin called taking too little pleasure in food. Insensibility. Nature attached the pleasure for a reason, and the man who no longer wants his dinner has not arrived at virtue; he has gone past it and out the other side. He named that vice in the thirteenth century and nobody has needed it until now. This episode puts the fat theologian who wrote the last word on appetite in front of a medicine that deletes it. He has opinions. On the "easy way out" — a 2025 study found people rate weight loss as less admirable when a drug was involved, even when the person also dieted and exercised, and he never once said the suffering was the point. On the five species — praepropere, laute, nimis, ardenter, studiose — four of which convict the thin wellness influencer with the beautiful bowl faster than they convict anyone eating an ordinary dinner. On the lizard, since the entire drug class came out of the venom of a desert animal that can go four months without eating and does not appear to mind. On who can afford it, because he held that surplus belongs to the poor as a matter of justice and not charity, and the thing reaches Lagos as a counterfeit before it reaches Lagos as a medicine. And on this year, when a Catholic medical ethics journal published a full argument in his own terms and concluded the drug risks the exact vice he named. The man who located the sin in the wanting meets the first medicine that removes it. Both understood the same thing — that the appetite was always the real question, that whoever governs the wanting governs the man, that quiet is not the same as good. Only one of them asked what it was for. Episode 21.What Would They Think?