Each sense has its dual aspect, Jelal and Jemal, the strong and the gentle aspects of life, which are represented by the right and left side, their action being expressive and responsive. Therefore, although the sense of sight is one, the eyes are two; the sense of hearing is one, but the ears are two; the sense of smell is one, and the nostrils two. So it is with every sense. It is this dual aspect in nature which has caused the distinction of sex, for in spirit the human is human, but as it approaches the surface it becomes either male or female. The myth of Adam and Eve expresses this to those who know: Eve coming out of Adam's rib means that two came out of the one Spirit.