How much should a Stoic grieve? In proper grief, Seneca tells Polybius, our reason “will maintain a mean which will copy neither indifference nor madness, and will keep us in the state that is the mark of an affectionate, and not an unbalanced, mind.” Consequently, he advises Polybius to “let your tears flow, but let them also cease, let deepest sighs be drawn from your breast, but let them also find an end.”2