18I hated all for which I had toiled under the sun, because I must leave it to the man who comes after me.
19And who knows whether that man will be wise or foolish? Yet he will take over all the labor at which I have worked skillfully under the sun. This too is futile.
20So my heart began to despair over all the labor that I had done under the sun.
— Ecclesiastes 2:18-20