I am including another excerpt from LaRose’s article:
Substance dualism, under the Stanford encyclopedia of philosophy, can be understood as affirming “a substance is characterized by its properties, but . . . it is more than the collection of the properties it possesses; it is the thing which possesses them. So, the mind is not just a collection of thoughts but is that which thinks - an immaterial substance over and above its immaterial states.” The roots of substance dualism are seated in a metaphysic which argues for the existence of both a physical body and immaterial mind within humans. . . . At base, there are two substances (maybe more) in existence, and humans are constituted by both. Many philosophers point out this unification of body and soul can be understood as a marriage of substances to accomplish beauty and purpose. This union doesn’t downplay the intimacy and interaction of both substances, nor does it deny that both substances are distinct.