3 What does man gain from all his labor at which he toils under the sun? 4 Generations come and generations go, but the earth remains forever. 5 The sun rises and the sun sets, and hurries back to where it rises. 6 The wind blows to the south and turns to the north; round and round it goes, ever returning on its course. 7 All streams flow into the sea, yet the sea is never full. To the place the streams come from, there they return again.