I communed with mine own heart, saying, Lo, I am come to great estate, and have gotten more wisdom than all they that have been before me in Jerusalem: yea, my heart had great experience of wisdom and knowledge.

For in much wisdom is much grief: and he that increaseth knowledge increaseth sorrow.

Behold, I have done according to thy words: lo, I have given thee a wise and an understanding heart; so that there was none like thee before thee, neither after thee shall any arise like unto thee.

I said in mine heart, Go to now, I will prove thee with mirth, therefore enjoy pleasure: and, behold, this also is vanity.

Vanity of vanities, saith the Preacher, vanity of vanities; all is vanity.

I have seen all the works that are done under the sun; and, behold, all is vanity and vexation of spirit.