Our virtues are voluntary (and in fact we are in a sense ourselves partly the cause of our moral dispositions, and it is our having a certain character that makes us set up an end of a certain kind), it follows that our vices are voluntary also; they are voluntary in the same manner as our virtues.
Sensuality, too, which used to show itself course, smiling, unmasked, and unmistakable, is now serious, analytic, and so burdened with a sense of its responsibilities that it passes muster half the time as a new type of asceticism.