 Burley uses the standard 13th-century division of universals into ante rem, in re, and post rem (LsP, ch. de forma, fol. 53rb; TdU, passim), but he follows Auriol and the earlier Ockham in positing another mental universal, distinct from the act of understanding (the ‘standard’ post rem conceptual universal), and existing in the mind only as its object (habens esse obiectivum in intellectu—EP, ch. de priori, fol. 48vb; TdU, pp. 60–66). By introducing a second mental universal existing obiective in the mind, Burley hopes to account for the fact that we can grasp the meaning of a general noun even though we have not experienced any of its supposits, and thus without properly knowing the universal it directly signifies.