Ecclesiastes 7:21-25

²¹Also to all the words that they speak give not thy heart, that thou hear not thy servant reviling thee.

²²For many times also hath thy heart known that thou thyself also hast reviled others.

²³All this I have tried by wisdom; I have said, 'I am wise,' and it is far from me.

²⁴Far off is that which hath been, and deep, deep, who doth find it?

²⁵I have turned round, also my heart, to know and to search, and to seek out wisdom, and reason, and to know the wrong of folly, and of foolishness the madness.