If, on the other hand, they adopt a lower way of living, with ambition in place of philosophy, then pretty soon when they are careless because they have been drinking or for some other reason, the pair's undisciplined horses will catch their souls off guard and together bring them to commit that act which ordinary people would take to be the happiest choice of all; and when they have consummated it once, they go on doing this for the rest of their lives, but sparingly, since they have not approved of what they are doing with their whole minds.