Ecclesiastes 1:13; Ecclesiastes 2:3; Ecclesiastes 7:25

Ecclesiastes 1:13

13 And I set my mind to seek and explore by wisdom concerning all that has been done under heaven. It is a grievous task which God has given to the sons of men to be afflicted with.

Ecclesiastes 2:3

3 I explored with my mind how to stimulate my body with wine while my mind was guiding me wisely, and how to take hold of folly, until I could see what good there is for the sons of men to do under heaven the few years of their lives.

Ecclesiastes 7:25

25 I directed my mind to know, to investigate and to seek wisdom and an explanation, and to know the evil of folly and the foolishness of madness.