Aristotle was a great philosopher.

There came to him one day a young man with a singular question. Master, he said, I have seen a thing which much displeases my mind. I have seen an old man ripe in years doing wanton follies. Now if the cause of such things be age, I have decided to die young. Therefore for the love of God give me counsel, if you can.

Aristotle replied: I cannot do other than tell you that when the nature of man grows old, the good natural heat changes into weakness, the reasonable virtue fails and alters¹. For your instruction I will teach you what I can. Do so that in your youth you practice all beautiful, pleasant and honest things, and guard yourself from indulging in what is contrary to these; so when you are old, you will live without evil, not from nature or from reason, but owing to the long pleasant and noble habit you have formed.

¹ This passage is obscure and defective.