What is the profit of all man's labor, that is, his labor under the sun? One generation passes, another generation comes, but the earth will exist forever. The sun has come out and gone down, so hurry back to where you came from. The wind blows to the south, turns to the north, keeps spinning, and goes back to the original road. All rivers flow into the sea, but the sea is not satisfied. Wherever rivers flow, they will return. People who are bored with everything are out of the question. They don't see enough, they don't hear enough. What happened will happen again, and what has been done will happen again. There is nothing new under the sun.