What do people get for all their hard work?
Generations come and go, but nothing really changes.
The sun rises and sets and hurries around to rise again.
The wind blows south and north, here and there, twisting back and forth, getting nowhere.
The rivers run into the sea, but the sea is never full. Then the water returns again to the rivers and flows again to the sea.
Everything is so weary and tiresome! No matter how much we see, we are never satisfied. No matter how much we hear, we are not content.
History merely repeats itself. It has all been done before. Nothing under the sun is truly new.
What can you point to that is new? How do you know it didn't already exist long ago?
We don't remember what happened in those former times. And in future generations, no one will remember what we are doing now.