Ecclesiastes 2:12
Next I turned to examine wisdom, insanity, and foolishness, because what can a person do who succeeds the king except what has already been accomplished?
Ecclesiastes 1:17
So I dedicated myself to learn about wisdom and knowledge, and about insanity and foolishness. And I discovered that this is also like chasing after the wind.
Ecclesiastes 7:25
I committed myself to understand, to learn, to search for wisdom and explanations, and to understand both the evil that is foolishness and the stupidity that is delusion.
Ecclesiastes 1:9-10
Whatever has happened, will happen again; whatever has been done, will be done again. There is nothing new on earth.