Ecclesiastes 1:18For in much wisdom is much vexation, and he who increases knowledge increases sorrow. 
I have never been much of a “conspiracy theorist”, whether in sports or historical speculations about things that have yet to be “uncovered”.  But when I see documentaries that uncover past conspiracies, there is something about the revelation of such things, that leads me to find more and more confidence in God’s Word, and know that He is the only hope for mankind…(Romans 3:10)
Though it seems linear, that “the more you know” the more apt you are to excel, flourish, and be successful in whatever you do.  For example, further education in a field you work in, enlarges your capacity to do more in that field and excel.  But do we take in consideration people, and how more knowledge and wisdom effects how we see them?
King Solomon was pointing out the reality of having knowledge and wisdom.  That with it comes an understanding about people and things, that are not beautiful and lovely, but reveal sorrow in this world.  So instead of being open and merciful, we become judgmental and cold, the moment we see a familiar flaw or tendency.  These reactions flow from a sorrow or anger, in the revelation of how we all can be as sinners.
Though this passage can be interpreted as extremely negative.  The reality is our need for Christ, and His power to walk in love despite what we have “grown wise” in.  It is the power of love that keeps people committed, not the performance of anyone.  Because the truth behind what Solomon is saying, is that the more knowledge someone has of you, the more vexed or sorrowful you will make them eventually, so God’s unconditional love must be our anchor…(Hebrews 6:19)
Instead of making us sorrowful and depressed that we can’t earn other people’s “love”, it should make us praise Jesus for how great His love is!  That He knew us perfectly and died anyway!  This kind of wisdom helps us not lie to ourselves and to God, that we are great and wonderful, in an attempt to seem lovable.  Because that takes away the magnitude of realizing how much Christ loves us, to know us perfectly and die anyway!  Who else knows you perfectly and will do that?  (Romans 5:8, 1 Corinthians 13:12-13)