Ecclesiastes 2:17-20

Toil Is Meaningless 17So I hated life, because the work that is done under the sun was grievous to me. All of it is meaningless, a chasing after the wind. 18I hated all the things I had toiled for under the sun, because I must leave them to the one who comes after me. 19And who knows whether that person will be wise or foolish? Yet they will have control over all the fruit of my toil into which I have poured my effort and skill under the sun. This too is meaningless. 20So my heart began to despair over all my toilsome labor under the sun.