of these words and concepts. Among these are learning and teaching. The common meaning of learning is the accumulation of intellectual material about a particular subject. In Course terms, learning means the exact opposite -- unlearning. "It is the function of God's teachers to bring true learning to the world. Properly speaking it is unlearning that they bring, for that is 'true learning' in the world." [M15/16] Teaching usually means instruction, the imparting of specific knowledge by someone who knows to someone who doesn't. Again the Course turns the tables, "Your holiness is the salvation of the world. It lets you teach the world that it is one with you, not by preaching to it, not by telling it anything, but merely by your quiet recognition that in your holiness are all things blessed along with you." [W56/56] Another key concept which is different from common meaning is ego. This term comes to us from Freud as a part of individual mind. Yet A Course in Miracles tells us, "The structure of 'individual consciousness' is essentially irrelevant because it is a concept representing the 'original error' or the 'original sin." [M73/77] What the Course means by ego is the entire concept of separation in all of its forms and manifestations--the "original sin", if you will. This singular idea is the fundamental "problem" in consciousness. It is an idea shared by everyone and everything in the manifest universe. The Course is definitely not talking about some fragmented part of individual personality