The answer is your true self. The one who is talking is your ego or personality. The one who is quietly aware is who you really are: the Observer. The more closely you become aligned with the quiet Observer, the less you judge. Your internal dialogue begins to shut down, and you become more detached about the various external stimuli that come at you all day long. You begin to actually view your internal dialogue with an unbiased (and sometimes amused) perspective.
