For as the body, so long as it is oppressed by fevers and by one sickness after another, even if it be strong, is exhausted, but when it is freed from this attack, it recovers its proper force, so also the soul in youth is feverish, and is chiefly possessed by the love of glory, and luxurious living, and sensual lusts, and many other imaginations; but old age, when it comes on, drives away all these passions, some through satiety, some through philosophy. For old age relaxes the powers of the body, and does not permit the soul to make use of them even if it wish, but repressing them as enemies of various kinds, it sets her in a place free from troubles and produces a great calm, and brings in a greater fear.