And I set my heart to know wisdom and to know madness and folly. I perceived that this also is grasping for the wind.
Ecclesiastes 1:17
Surrounding context
1:16 I communed with my heart, saying, "Look, I have attained greatness, and have gained more wisdom than all who were before me in Jerusalem. My heart has understood great wisdom and knowledge."
1:17 And I set my heart to know wisdom and to know madness and folly. I perceived that this also is grasping for the wind.
1:18 For in much wisdom is much grief, And he who increases knowledge increases sorrow.