CAB(i)
15 Then I praised mirth, because there is no good for a man under the sun, but to eat, and drink, and be merry. And this shall attend him in his labor all the days of his life, which God has given him under the sun.
16 On this I set my heart to know wisdom, and to perceive the trouble that was done upon the earth; even though one sees no sleep day or night.
17 And I beheld all the works of God, that a man shall not be able to discover the work which is done under the sun. Whatever things a man shall endeavor to seek, however a man may labor to seek it, yet he shall not find it. Moreover, though a wise man may speak of knowing it, he shall not be able to find it; for I applied all this to my heart, and my heart has seen all this.