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 striving after wind.
For in much wisdom is much vexation, and he who increases knowledge increases sorrow.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the 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. (Revised Standard Version - Holy Bible)