We have not been raised to cultivate a sense of Mystery. We may even see the unknown as an insult to our competence, a personal failing. Seen this way, the unknown becomes a challenge to action. But Mystery does not require action; Mystery requires our attention. Mystery requires that we listen and become open. When we meet with the unknown in this way, we can be touched by a wisdom that can transform our lives.
Truth must find an echo in the one who hears it to be recognized. Put it another way, a heart must really be listening, really wanting the truth, really wanting God.