argument against the possibility of motion (§534). Again, he starts by ruling out non-being. In this case, the sort of non-being he discusses is emptiness: there cannot be a place with nothing in it, again because there is no such thing as nothing. To put it another way, void is impossible. Now Melissus points out that if there is no void, then that will make motion impossible. After all, there will be no empty place for anything to move into.
