Letter 74 — On Virtue as a Refuge from Worldly Distractions (§16)

“This being so, you should consider whether one has a right to call anything good in which God is outdone by man. Let us limit the Supreme Good to the soul; it loses its meaning if it is taken from the best part of us and applied to the worst, that is, if it is transferred to the senses; for the senses are more active in dumb beasts. The sum total of our happiness must not be placed in the flesh; the true goods are those which reason bestows, substantial and eternal; they cannot fall away, neither can they grow less or be diminished.”