In other words, ultimate knowledge is not humanly attainable regardless of how one looks for it…

… in A History of Western Philosophy Bertrand Russell distinguishes two possible intents to asking the question why… we seek “an explanation by final cause,” which he labels a teleological inquiry… or we seek an explanation by mechanistic cause and effect… he goes on to point out that the question why cannot “be asked intelligibly about reality as a whole (including god), but only about parts of it."