Ecclesiastes 1:6-8

6 The wind blows south, then it turns north; the wind blows all around and keeps returning to its rounds.

7 All the rivers flow to the sea, yet the sea is not full; to the place where the rivers flow, there they keep on flowing.

8 Everything is wearisome, more than one can express; the eye is not satisfied with seeing, the ear not filled up with hearing.