Ecclesiastes 1:6-8

6 It moves to the south, and then moves around to the north; the wind continually travels around, and it keeps turning on its circuit.

7 All the streams flow into the sea, and the sea is never filled up. And to the place where the streams flow, there they continually return to flow.

8 All matters are wearisome; a man is not able to speak to them. The eye is not satisfied with what it sees, and the ear is not content with what it hears.