4 Bible Verses about Studying Insanity

And I applied my heart to know wisdom, and to know madness and folly. I perceived that this also was a striving after wind.

And I turned myself to behold wisdom and madness and folly. For what [can] the man [do] who comes after the king? [Even] that which has been done long ago.

I turned about, and my heart [was set] to know and to search out, and to seek wisdom and the reason [of things], and to know that wickedness is folly, and that foolishness is madness.

I said of laughter, It is mad, and of mirth, What does it do?