Ecclesiastes 1:14 in the World English Bible
I have seen all the works that are done under the sun; and behold, all is vanity and a chasing after wind.
Context
13 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.
14 I have seen all the works that are done under the sun; and, behold, all is vanity and vexation of spirit.
15 That which is crooked cannot be made straight: and that which is wanting cannot be numbered.