Or, in English, “the more thing change, the more they remain the same”:
“The children now love luxury; they have bad manners, contempt for authority; they show disrespect for elders and love chatter in place of exercise. Children are now tyrants, not the servants of their households. They no longer rise when elders enter the room. They contradict their parents, chatter before company, gobble up food [dainties] at the table, cross their legs, and tyrannize their teachers.
That’d be from Socrates. Supposedly.
In process of researching the above, I also came across an interesting quote from G. K. Chesterton (a site with a lot of his quotes):
“I believe what really happens in history is this: the old man is always wrong; and the young people are always wrong about what is wrong with him. The practical form it takes is this: that, while the old man may stand by some stupid custom, the young man always attacks it with some theory that turns out to be equally stupid.”