NET
16 I thought to myself, “I have become much wiser than any of my predecessors who ruled over Jerusalem; I have acquired much wisdom and knowledge.”
Darby
16 I communed with mine own heart, saying, Lo, I have become great and have acquired wisdom more than all they that have been before me over Jerusalem; and my heart hath seen much of wisdom and knowledge.
KJV
16 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.