James Faulconer outlines the struggle between Reason and Faith, arriving at Heidegger's contributions:

Reason in the fundamental sense is the welcoming, remembering, recognizing response to a call from someone or something. Fundamental reason is a response that makes possible reason in the second, narrower, emaciated sense, but that second sense of reason is also a kind of response. Otto Pöggeler points out that for Heidegger the essence of thought is not questioning, though the thinker must question. The essence of thought is not questioning because questioning relies on already finding oneself called by something and submitting oneself to it. One cannot question unless one is already in a world that reveals itself and makes demands.

Which is the crux of Heidegger's basic insight. Hat tip Mormon Metaphysics.  ¶ 8:13 PM