LXX2012(i)
20 so I went about to dismiss from my heart all my labor wherein I had laboured under the sun.
21 For there is [such] a man that his labor is in wisdom, and in knowledge, and in fortitude; [yet] this man shall give his portion to one who has not laboured therein. This is also vanity and great evil.
22 For it happens to a man in all his labor, and in the purpose of his heart wherein he labors under the sun.
23 For all his days [are days] of sorrows, and vexation of spirit is his; in the night also his heart rests not. This is also vanity.