Ecclesiastes Chapter 1, Verse 13

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.- edit KJV text
13: And I proposed in my mind to seek and search out wisely concerning all things that are done under the sun. This painful occupation hath God given to the children of men, to be exercised therein.— edit Douay text
13: And I applied my heart to seek out and examine by wisdom concerning all things that are done under heaven, for God has given to the sons of men an evil trouble to be troubled therewith.— edit LXX text