Until the 17th century objects were thought to do what they did because they were as they were. This is the Aristotelian picture. God creates the objects and endows them with powers. God can intervene in the course of nature in either of two ways: by miraculously modifying the powers possessed by objects, or by directly manipulating them. With Descartes this picture alters dramatically. The source of motion is not to be found in material objects, but in mental substances, finite or infinite.
Continuing the End Times series, Richard Marshall interviews John Heil.