   Note that neither Niphus nor Melanchthon claim that a reason for using the corpus aristotelicum as the basis of teaching philosophy at universities is the truth of any of Aristotle’s  statements.[19]   Melanchthon goes on to request that, in addition to Aristotle, other authors should be used for some fields, something that is admitted also by  Niphus.[20]    Philosophy taught at Renaissance universities uses Aristotle as its main starting point and main basis, but (at least in many cases) Aristotle (together with his commentators) is not the only basis of philosophy taught at Renaissance  universities.[21] 