Ecclesiastes 1:17
And I set my heart to know wisdom, and to know madness and folly: I perceived that this also is like grasping the wind.
Ecclesiastes 2:3
I sought in my heart to give myself unto wine, yet acquainting my heart with wisdom; and to lay hold on folly, till I might see what was good for the sons of men, which they should do under heaven all the days of their life.
Ecclesiastes 1:13-14
And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this severe burden has God given to the sons of man to be afflicted with.
Ecclesiastes 2:10-12
And whatsoever my eyes desired I kept not from them, I withheld not my heart from any joy; for my heart rejoiced in all my labor: and this was my reward of all my labor.
Ecclesiastes 7:23-25
All this have I proved by wisdom: I said, I will be wise; but it was far from me.
1 Thessalonians 5:21
Test all things; hold fast that which is good.