Ecclesiastes 1:13; Ecclesiastes 1:16-18
And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith.
I communed with mine own heart, saying , Lo, I am come to great estate , and have gotten more wisdom than all they that have been before me in Jerusalem: yea, my heart had great experience of wisdom and knowledge.
And I gave my heart to know wisdom, and to know madness and folly: I perceived that this also is vexation of spirit.
For in much wisdom is much grief: and he that increaseth knowledge increaseth sorrow.