impossible; for it is impossible that the rare should be as full as the dense; but the rare is more empty than the dense, and there is no such thing as emptiness. It is necessary to judge whether being is full or not by its capacity to receive something else: if it will not receive anything it is full; if it will receive something it is not full. Now if the void does not exist, it must of necessity be full; and if this is the case it does not move, not because it is impossible for it to move through space already filled, as we say of bodies, but because all being cannot be moved into being (for there is nothing besides itself), nor can being be moved into not-being, for not-being does not exist. 23; 109, 7. Melissos also is blamed because in his frequent references to the beginning he does not use the word to mean a beginning in time which applies to that which comes into existence, but rather to mean a logical beginning which does not apply to the things that are changing collectively. He seems to have seen clearly before Aristotle that all matter, even that which is eternal, being limited has a limited capacity, and in itself is always at the end of time, and because of the ever-moving beginning of that which passes, it is always at the beginning, and remains eternal, so that that which has beginning and end in quantity has also beginning and end in time, and the reverse; for that which has beginning and end in time is not everything simultaneously. So he bases his proof on beginning and end in time. Accordingly he says that that which is not everything—_i.e._ which is not the whole simultaneously—is not without beginning or end; what applies to things that are indivisible and infinite in their being, applies so much the more to pure being; and that all applies to being. Melissos puts it as follows: (Fr. 7) Since then it did not come into being but _is_, it always was and always will be, and has neither beginning nor end, but is infinite. For if it had come into existence it would have had a beginning (for that which once came into existence would have a beginning) and an end (for that which once came into existence would come to an end); if it neither had a beginning nor came to an end, it always was and always will be; it has not beginning or end; but it is impossible that anything which is not the whole should always exist.... l. 31. (Fr. 8) But as it always exists, so it is necessary also that it be always infinite in magnitude. l. 33. (Fr. 15) If being is separated it moves; and that which moves could not exist simultaneously. 24; 110, 1 (Fr. 16) If being exists it must be one, and being one it is necessary that it should not itself have body; (19; 87, 6) and if it should have thickness, it would have parts and would no longer be a unity. l. 3 (Fr. 9) Nothing which has beginning and end is either eternal or infinite. l. 5 (Fr. 10) If it were not one, it would be bounded by something else.[70]