Ecclesiastes 7:23-25

New Revised Standard Version, Anglicised Catholic Edition

²³ All this I have tested by wisdom; I said, ‘I will be wise’, but it was far from me. ²⁴ That which is, is far off, and deep, very deep; who can find it out? ²⁵ I turned my mind to know and to search out and to seek wisdom and the sum of things, and to know that wickedness is folly and that foolishness is madness.