The body is the external coating and the mind is the internal coating of the Atman who is the real perceiver, the real enjoyer, the being in the body who is working the body by means of the internal organ or the mind.
Swami VivekanandaHe is an atheist who does not believe in himself. The old religions said that he was an atheist who did not believe in God. The new religion says that he is an atheist who does not believe in himself.
Swami Vivekananda