When you inquire 'Who am I?' if you are honest, you'll notice that it takes you right back to silence instantly. The brain doesn't have an answer, so all of a sudden there is silence.
In silence a question has great power, because in silence a question will always lead you deeper into your experience. If there is no grounding in silence, a spiritual question is going to lead you into your mind.
Am I a harp that the hand of the mighty may touch me, or a flute that his breath may pass through me? A seeker of silences am I, and what treasure have I found in silences that I may dispense with confidence?