In Jungian psychology, the shadow or "shadow aspect" may refer to (1) an unconscious aspect of the personality which the conscious ego does not identify in itself. Because one tends to reject or remain ignorant of the least desirable aspects of one's personality, the shadow is largely negative, or (2) the entirety of the unconscious, i.e., everything of which a person is not fully conscious. There are, however, positive aspects which may also remain hidden in one's shadow (especially in people with low self-esteem). Contrary to a Freudian definition of shadow, therefore, the Jungian shadow can include everything outside the light of consciousness, and may be positive or negative. "Everyone carries a shadow," Jung wrote, "and the less it is embodied in the individual's conscious life, the blacker and denser it is." It may be (in part) one's link to more primitive animal instincts, which are superseded during early childhood by the conscious mind.