Ecclesiastes 1:12-15 RSV

12 I the Preacher have been king over Israel in Jerusalem.
13 And I applied my mind to seek and to search out by wisdom all that is done under heaven; it is an unhappy business that God has given to the sons of men to be busy with.
14 I have seen everything that is done under the sun; and behold, all is vanity and a striving after wind.
15 What is crooked cannot be made straight, and what is lacking cannot be numbered.