19 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.
20 Therefore I went about to cause my heart to despair of all the labour which I took under the sun.
21 For there is a man whose labour [is] in wisdom, and in knowledge, and in equity; yet to a man that hath not laboured therein shall he leave it [for] his portion. This also [is] vanity and a great evil.
22 For what hath man of all his labour, and of the vexation of his heart, wherein he hath laboured under the sun?
23 For all his days [are] sorrows, and his travail grief; yea, his heart taketh not rest in the night. This is also vanity.