Letter 66 — On Various Aspects of Virtue (§14)

““What then,” you say; “is there no difference between joy and unyielding endurance of pain?” None at all, as regards the virtues themselves; very great, however, in the circumstances in which either of these two virtues is displayed. In the one case, there is a natural relaxation and loosening of the soul; in the other there is an unnatural pain. Hence these circumstances, between which a great distinction can be drawn, belong to the category of indifferent things, but the virtue shown in each case is equal.”