In this passage Metochites seems to contend that Aristotle’s argument against self-movement in Physics 7.1 and 8.5 entails the proposition that “what moves itself will not cease to do so,” which is used as one of the premises of an argument for the immortality of the soul. This latter argument is apparently strongly inspired by the first part of the proof of immortality in Socrates’ palinode in Plato’s Phaedrus (245c5–8). It seems to be an “ontological” kind of argument. That is to say, it attem