Abstract
The discussion of sameness and difference in the three versions of the Theologia has been analyzed by a number of recent writers. Despite some disagreements, they concur that Abelard’s views are best expressed in the Theologia christiana and that he is putting forward a theory that—perhaps adapted—can help philosophers now in considering the material constitution of objects. By contrast, I argue that his views, which should be seen as developing and reaching their final form in the Theologia “scholarium,” are much more closely linked than these scholars have thought to the particular theological problems involved in discussing the Trinity.