Sextus Empiricus Pyrrhoniae Hypotyposes 3.10.71

[71] Further, there is this also to be said. If a thing moves, it moves either in the place where it is or in that where it is not. But it does not move in the place where it is, for if it is in it, it remains in it; nor yet does it move in the place where it is not; for where a thing is not, there it can neither effect nor suffer anything. Therefore nothing moves. This argument is, in fact, that of Diodorus Cronos, ¹ but it has been the subject of many attacks, of which we shall describe, owing to the character of our treatise, only the more formidable, together with a judgement of their value, as it seems to us.