Letter 85 — On Some Vain Syllogisms (§10)

“Virtue alone possesses moderation; the evils that afflict the mind do not admit of moderation. You can more easily remove than control them. Can one doubt that the vices of the human mind, when they have become chronic and callous (“diseases” we call them), are beyond control, as, for example, greed, cruelty, and wantonness? Therefore the passions also are beyond control; for it is from the passions that we pass over to the vices.”