 Abelard argues against conformality as follows. Consider a tower, which is a material object with a certain length, depth, and height; assume that these features compose its form, much as the shape of a statue is its form. According to Aristotelian metaphysics, the inherence of a form in a subject makes the subject into something characterized by that form, as for instance whiteness inhering in Socrates makes him something white. The forms of the tower likewise make that in which they inhere to be tall, wide, massive—all physical properties. If these forms inhere in the mind, then, they should make the mind tall, wide, and massive, an absurd conclusion: the mind “cannot extend itself in length or width.” Yet it is a cardinal thesis of the conformality theory that the mind has the identical form that is possessed by the external object, the tower, although the form of (say) length is by its very nature physical. Thus, Abelard concludes, conformality is incoherent.