Complex sentence: For example, he says that Plato says at one time that there are three first causes, but then at another that there are four; or, that matter is uncreated, but then later that it is created.
Split into simpler sentences: For example, he claims that Plato says at one time that there are three first causes, but then at another time that there are four. Again, he claims that Plato says that matter is uncreated, but then later contradicts himself and says that it is created.