21Also take not heed unto all words that are spoken, lest thou hear thy servant curse thee;
22for oftentimes also thine own heart knoweth that thou thyself likewise hast cursed others.
23All this have I tried by wisdom; I said: 'I will get wisdom'; but it was far from me.
24That which is is far off, and exceeding deep; who can find it out?
Ecclesiastes 7
Ecclesiastes 7:21-24