 Burley’s earlier position on the question of the number of categories implies a ‘soft’ attitude towards the problem of defining and classifying the types of identity, since it is evident that the non-absolute categories could be considered similar to the absolute ones. Burley does not deal with this subject in his middle commentary on the Categories, however, but in the Quaestiones in librum Perihermenias (q. 4), following Henry of Ghent, he maintains that (1) there are three different kinds of identity: real (realis), notional (secundum rationem), and intentional (secundum intentionem); (2) intentional difference is something between real and notional difference; and (3) two things differ intentionally if and only if they are constitutive of the same thing without their definitions overlapping, such that each can be understood independently of the other, and even together with the negation of the other (QP, q. 4, p. 273). Even so, he does not use this logical machinery to explain the relationship between absolute and non-absolute categories, but only to clarify the relations between genus and difference, essence and being (esse). He maintains that there is no real distinction between essence and being (as Thomas Aquinas and Giles of Rome had taught), but that they are only intentionally distinct.