Ecclesiastes 1:13-16

¹³And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this grievous labor hath God given to the sons of man to be exercised with it.

¹⁴I have seen all the works that are done under the sun; and behold, all is vanity and vexation of spirit.

¹⁵That which is crooked cannot be made straight: and that which is wanting cannot be numbered.

¹⁶I communed with my own heart, saying, Lo, I have come to great estate, and have gained more wisdom than all they that have been before me in Jerusalem: and my heart had great experience of wisdom and knowledge.