Ecclesiastes 6:10-12

Whatsoever hath been, the name thereof was given long ago; and it is known what man is; neither can he contend with him that is mightier than he. Seeing there are many things that increase vanity, what is man the better? For who knoweth what is good for man in his life, all the days of his vain life which he spendeth as a shadow? for who can tell a man what shall be after him under the sun?