I read it once as a young man, and have been thinking about it ever since, as it is apposite to the idea that the world is going to hell in a handcart. Ironic that they were thinking this in Ancient Greece nearly 2500 years ago.
This is what I called 'the myth of decline' - people as they get older tend to think that everything is getting worse. The truth of it is that the only change is in them - they are getting weaker, their minds are slowing and they begin to fear the world a little more. Also, I suspect there is an element that they did not change the world to the form that their youthful enthusiasm had.
It is from a really very good presentation on youth marketing from someone at BBH. See below