For in much wisdom is much grief; and he who increases knowledge increases sorrow.
And to man He said, Behold, the fear of the Lord, that is wisdom! And to depart from evil is understanding!
Then I said in my heart, As it happens to the fool, so it happens even to me; and why was I then more wise? And I said in my heart that this also is vanity.
For all his days are sorrows, and his labor sadness; yea, his heart does not take rest in the night. This is also vanity.
Do not be righteous overmuch, neither make yourself overwise; why destroy yourself?