Claude was a man of normal size, given to moderation in most things—but well into his eighties, he remained a formidable eater. On one occasion, when he'd just gotten out of the hospital after a coloscopy and had been advised to eat sensibly for a while, we were discussing where to go for dinner. I mentioned one restaurant famous for its foie gras, then quickly said, "Of course, that's probably not the sort of thing you'll want to eat tonight." "Well, you know," he replied, "foie gras doesn't sound so bad. And after all, it is in a sense already half-digested, and so ought to go down pretty well." As it turned out, though, he didn't have foie gras that night. He had lamb kidneys instead.