The spiritual, rational, and immortal part in man; that part
   of man which enables him to think, and which renders him a subject of
   moral government; -- sometimes, in distinction from the higher nature,
   or spirit, of man, the so-called animal soul, that is, the seat of
   life, the sensitive affections and phantasy, exclusive of the voluntary
   and rational powers; -- sometimes, in distinction from the mind, the
   moral and emotional part of man's nature, the seat of feeling, in
   distinction from intellect; -- sometimes, the intellect only; the
   understanding; the seat of knowledge, as distinguished from feeling. In
   a more general sense, "an animating, separable, surviving entity, the
   vehicle of individual personal existence."