Letter 94 (§22)

““But it is folly,” they retort, “to prescribe what a sick man ought to do, just as if he were well, when you should really restore his health; for without health precepts are not worth a jot.” But have not sick men and sound men something in common, concerning which they need continual advice? For example, not to grasp greedily after food, and to avoid getting over-tired. Poor and rich have certain precepts which fit them both.”