““By reversing the steps that we took to advance from the concept of substance to that of Materia Prima, we can imagine building up our universe: the homogeneous basic substance, Materia Prima, contains all the possibilities that the laws of nature will permit. There is no such thing as empty space into which our material world is introduced- that is what Aristotle preached, and modern physics agrees with him. The empty space known to it- the physical vacuum- has characteristics that Aristotle gave his Materia Prima. Werner Heisenberg characterized Aristotle's matter in the following way "Aristotle's matter is certainly not a given substance such as say water or air; also it is not just simply space. Rather it is an indeterminate physical substrate which contains the faculty to assume some given form and thus to enter into physical reality.””