The gift of virtue also to man alone is a great proof that souls are immortal. For this will not be in accordance with nature if the soul is extinguished; for it is injurious to this present life. For that earthly life, which we lead in common with dumb animals, both seeks pleasure, by the varied and agreeable fruits of which it is delighted, and avoids pain, the harshness of which, by its unpleasant sensations, injures the nature of living beings, and endeavours to lead them to death, which dissolves the living being. If, therefore, virtue both prohibits man from those goods which are naturally desired, and impels him to endure evils which are naturally avoided, it follows that virtue is an evil, and opposed to nature; and he must necessarily be judged foolish who pursues it, since he injures himself both by avoiding present goods, and by seeking equally evils, without hope of greater advantage. For when it is permitted us to enjoy the sweetest pleasures, should we not appear to be without sense if we should not prefer to live in lowliness, in want, in contempt and ignominy, or not to live at all, but to be tormented with pain, and to die, when from these evils we should gain nothing to compensate us for the pleasure which we have given up? But if virtue is not an evil, and acts honourably, inasmuch as it despises vicious and shameful pleasures, and bravely, inasmuch as it neither fears pain nor death, that it may discharge its duty, therefore it must obtain some greater good than those things are which it despises. But when death has been undergone, what further good can be hoped for except immortality?