to change because it is composite; in essence it is changeable since it is created out of corruptible and changeable matter, being a mixture or a compound of mutually opposite elements. Its essence is composed of hot and cold, as those who are knowledgeable in those matters say (and it is true), of dry and moist. As such the body has neither liberty nor will, and, if I must say so, [70] not even movement, unless one were to call its mutability and its tendency to move toward corruption a natural