12 I, the Preacher, have been king over Israel in Jerusalem. 13 And I applied myself by heart and mind to seek and search out by [human] 1 wisdom all human activity under heaven. It is a miserable business which 2 God has given to the sons of man with which to busy themselves. 14 I have seen all the works that are done under the sun, and behold, all is vanity, a striving after the wind and a feeding on wind.
15 What is crooked cannot be made straight, and what is defective and lacking cannot be counted.
16 I entered into counsel with my own mind, saying, Behold, I have acquired great [human] wisdom, yes, more than all who have been over Jerusalem before me; and my mind has had great experience of [moral] wisdom and [scientific] knowledge. 17 And I gave my mind to know [practical] wisdom and to discern [the character of] madness and folly [in which men seem to find satisfaction]; I perceived that this also is a searching after wind and a feeding on it.
18 For in much [human] wisdom is much vexation, and he who increases knowledge increases sorrow.