Ecclesiastes 1:13; Ecclesiastes 1:16-18
And I proposed in my mind to seek and search out wisely concerning all things that are done under the sun. This painful occupation hath God given to the children of men, to be exercised therein.
I have spoken in my heart, saying: Behold I am become great, and have gone beyond all in wisdom, that were before me in Jerusalem: and my mind hath contemplated many things wisely, and I have learned.
And I have given my heart to know prudence, and learning, and errors, and folly: and I have perceived that in these also there was labour, and vexation of spirit,
Because in much wisdom there is much indignation: and he that addeth knowledge, addeth also labour.