For the other and that which it is other than need not be other in some definite respect (for everything that is existent is either other or the same), but that which is different is different from some particular thing in some particular respect, so that there must be something identical whereby they differ.
izan ere, "beste bat" ez da nahitaez "beste bat" izango bestetasun jakin batengatik, den 25) guztia, baldin eta den zerbait bada, edo "beste bat" edo "bera" baita. Aitzitik, desberdin dena desberdintasun jakin batengatik izango da zerbaiten desberdina eta, ondorioz, nahitaez izango da bietan "gauza bera" den zerbait, zeinetan desberdintzen diren;