Ecclesiastes 2
18 Ref I hated all my labor in which I labored under the sun, seeing that I must leave it to the man who comes after me.
19 Ref Who knows whether he will be a wise man or a fool? Yet he will have rule over all of my labor in which I have labored, and in which I have shown myself wise under the sun. This also is vanity.
20 Ref Therefore I began to cause my heart to despair concerning all the labor in which I had labored under the sun.