The Republic by Plato Part 1 Page 8

cause, which is not old age, but men’s characters and tempers; for he who is of a calm and happy nature will hardly feel the pressure of age, but to him who is of an opposite disposition youth and age are equally a burden.

I listened in admiration, and wanting to draw him out, that he might go on — Yes, Cephalus, I said: but I rather suspect that people in general are not convinced by you when you speak thus; they think that old age sits lightly upon you, not because of your happy disposition, but because you are rich, and wealth is well known to be a great comforter.

You are right, he replied; they are not convinced: and there is something in what they say; not, however, so much as they imagine. I might answer them as Themistocles answered the Seriphian who was abusing him