Don't serve the body. Seneca, Epistles 2.14.1-6
Seneca admonishes Lucilius to avoid serving the body, which is properly a tool and not an end in itself, and then describes our fear of bodily harm. He says that this fear is most potent when we apprehend disaster before it happens. Fear of conquest trumps fear of plague, he thinks, because the former is more evident: it presents itself vividly to the mind before invading and investing the body. Fateor insitam esse nobis corporis nostri caritatem; fateor nos huius gerere tutelam. Non nego indulgendum illi, serviendum nego; multis enim serviet qui corpori servit, qui pro illo nimium timet, qui ad illud omnia refert . Sic gerere nos debemus, non tamquam propter corpus vivere debeamus, sed tamquam non possimus sine corpore . H uius nos nimius amor timoribus inquietat, sollicitudinibus onerat, contumeliis obicit . H onestum ei vile est cui corpus nimis carum est. Agatur eius diligentissime cura, ita tamen ut, cum exiget ratio, cum dignitas, cum fides, mittendum in ignes sit. Nihilominus...