[68] For when the president, or superintendent, or father, or whatever we like to call him, of our composite body, right reason, is departed, having left the flock that is in us, it being neglected and suffered to go its own way, perishes; and the loss to its master is great. But the irrational and wandering flock, being deprived of its shepherd, who ought to admonish and instruct it, strays away to a great distance from rational and immortal life.