Ecclesiastes 2:18-22

18I also hated all the fruit of my toil for which I had labored under the sun, because I must leave it to the one who comes after me.

19Who knows if he will be wise or a fool? Yet he will be master over all the fruit of my toil for which I had wisely labored under the sun. This too is futile.

20So I turned my heart over to despair over all the things for which I had toiled under the sun.

21For sometimes a man, who has labored with wisdom, knowledge and skill, must hand over as an inheritance to someone who did not work for it. This also is futile and a great misfortune.

22For what does a man get for all his toil and longing of his heart for which he labors under the sun?