Ecclesiastes 1:13-16

¹³And I applied my heart to seek and to search out by wisdom concerning all things that are done under heaven; it is a sore task that God hath given to the sons of men to be exercised therewith.

¹⁴I have seen all the works that are done under the sun; and, behold, all is vanity and a striving after wind.

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

¹⁶I spoke with my own heart, saying: 'Lo, I have gotten great wisdom, more also than all that were before me over Jerusalem'; yea, my heart hath had great experience of wisdom and knowledge.