4 Bible Verses about Studying Insanity

And I gave my heart to know wisdom and knowledge and to know folly and those who are mad; I learned in the end that this also is vexation of spirit.

And I turned myself to behold wisdom and those who are mad, and folly; for what can the man do that comes after the king? even that which has already been done.

I applied my heart to know and to search and to seek out wisdom and the reason of things, and to know the wickedness of folly and the madness of error;

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