  La Forge presents his use of the non-transfer argument as nothing but a faithful reading of Descartes. La Forge’s discussion, however, is better seen as an emendation of Descartes’s own position, which was more ambiguous on this subject. In the discussion of the third law of nature in his Principles of Philosophy, Descartes licenses a language that seems to accept transfer of motion between bodies (Sangiacomo 2014). Henry More was puzzled by this and pressed Descartes to clarify this point during their correspondence. In his reply to More, Descartes denies that he ever allowed for any transfer of motion.