11
There is no remembrance of them of former times; neither shall there be any remembrance of them of latter times that are to come, among those that shall come after. 
12
I Koheleth have been king over Israel in Jerusalem. 
13
And 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 G-d hath given to the sons of men to be exercised therewith. 
14
I have seen all the works that are done under the sun; and, behold, all is vanity and a striving after wind. 
15
That which is crooked cannot be made straight; and that which is wanting cannot be numbered. 
16
I 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. 
17
And I applied my heart to know wisdom, and to know madness and folly--I perceived that this also was a striving after wind. 
18
For in much wisdom is much vexation; and he that increaseth knowledge increaseth sorrow.