Human consciousness is an absolute wonder. It is the thing through which we think, understand and perceive reality, create, feel, and experience. It is in fact the only thing we experience directly, in the first person, with absolute certainty. And yet, the essence of consciousness itself is a mystery. Its very existence is an appeal to the materialist worldview, which holds that the only thing that exists is matter, and an acknowledgment of a mystery that opens up the possibility of a more spiritual worldview, which may include GOD as well.