 Cordemoy’s argument for occasionalism with regard to body-body interaction appears in the Fourth Discourse of the Discernement (he will later expand his occasionalism to cover all ‘interaction’ in the created world). There we are given a series of definitions and axioms, and conclusions derived from these. Cordemoy begins by asserting as axioms (1) a thing does not have of itself (de soy) that which can be lost without ceasing to be what it is, and (2) bodies are able to lose their motion without ceasing to be bodies. The conclusion drawn is that bodies do not have motion of themselves (that is, they do not possess the property of motion essentially), since they continue to be bodies when not in motion. Nor can one body give motion to another. This is not stated as one of Cordemoy’s axioms, but rather follows from Cartesian metaphysics, which holds motion to be a mode or state of a body, and not a quality distinct from the body. As such, a mode—that is, the very same mode—cannot be transferred from one body to another.