Complex sentence: Aspasia appears under her own name in Plato's dialogue Menexenus and some scholars have argued convincingly that Plato would not have used a false name, and that therfore Diotima is a historical figure.
Split into simpler sentences: Aspasia appears under her own name in Plato's dialogue Menexenus. Some scholars have argued convincingly that Plato did not use false names, and that therefore Diotima is a historical figure.