Ecclesiastes 7:21-25

²¹Also give not heed unto all words that are spoken, lest thou hear thy servant curse thee.

²²For also thine own heart knoweth that oftentimes thou thyself likewise hast cursed others.

²³All this have I tried by wisdom: I said, I will be wise; but it was far from me.

²⁴Whatever hath been, is far off, and exceeding deep: who will find it out?

²⁵I turned, I and my heart, to know, and to search, and to seek out wisdom and reason, and to know wickedness to be folly, and foolishness to be madness;