 Despite being composite in substance and powers, the soul is simple in existence in that it is not divisible and exists wholly in every part of the body (tota in qualibet parte corporis) (E 6, 46–48). There is, however, one type of unity mentioned in the beginning of this entry that needs to be addressed: the unity of being or substantial unity, the unity formed by the body and the soul, which is properly a human being.