Ecclesiastes 2:19

Overview - Ecclesiastes 2
1	The vanity of human courses in the works of pleasure.
12	Though the wise be better than the fool, yet both have one event.
18	The vanity of human labour, in leaving it they know not to whom.
24	Nothing better than joy in our labour; but that is God's gift.

Ecclesiastes 2:19  (King James Version)
And who knoweth whether he shall be a wise man or a fool? yet shall he have rule over all my labour wherein I have laboured, and wherein I have shewed myself wise under the sun. This is also vanity.