Many Sages have said, "Your world is a dream. You're living in an illusion." They're referring to this world of the mind and the way we believe our thoughts about reality. When we see the world through our thoughts, we stop experiencing life as it really is and others as they really are.
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.