I said to myself, "I have acquired great wisdom, surpassing all who were over Jerusalem before me; and my mind has had great experience of wisdom and knowledge."
And I applied my mind to know wisdom and to know madness and folly. I perceived that this also is but a chasing after wind.
For in much wisdom is much vexation, and those who increase knowledge increase sorrow.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved. (New Revised Standard Bible Version Online)