3. Do people really gain anything from all the hard work they do in this life?
4. People live and people die, but the earth continues forever.
5. The sun rises and the sun goes down, and then it hurries to rise again in the same place.
6. The wind blows to the south, and the wind blows to the north. The wind blows around and around. Then it turns and blows back to the place it began.
7. All rivers flow again and again to the same place. They all flow to the sea, but the sea never becomes full.