 Regarding forms as the unique kind of origin of the active and passive properties of natural things also leads to a reinterpretation of the compositional structure of the world. In Taurellus’s view, forms are the only beings underlying the compositional structure of the world: “Matter plainly does not exist, and nothing but forms can be and can enter composition” (PT, 280). Accordingly, “mixture or composition is … a mere conjunction of forms that in no way changes them” (PT: 276). At the same time, understanding composition in this way implies that no substantial form can be understood as a composition of other forms (PT: 274). Rather, every composition is accidental (PT). This is why Taurellus formulates the provocative claim that a human being does not possess substantial unity but rather is an aggregate of a plurality of forms (PT: 110).