Ecclesiastes 1:5-6

The sun also riseth The sun is in perpetual motion, rising, setting, and rising again, and so constantly repeating its course in all succeeding days, and years, and ages; and the like he observes concerning the winds and rivers, Ecclesiastes 1:6; and the design of these similitudes seems to be, to show the vanity of all worldly things, and that man's mind can never be satisfied with them, because there is nothing in the world but a constant repetition of the same things, which is so irksome, that the consideration thereof hath made some persons weary of their lives; and there is no new thing under the sun, as is added in the foot of the account, (Ecclesiastes 1:9,) which seems to be given us as a key to understand the meaning of the foregoing passages. And this is certain from experience, that the things of this world are so narrow, and the mind of man so vast, that there must be something new to satisfy the mind; and even delightful things, by too frequent repetition, are so far from yielding satisfaction, that they grow tedious and troublesome. The wind goeth, &c. The wind also sometimes blows from one quarter of the world, and sometimes from another; successively returning to the same quarters in which it had formerly been.