Whether any property is internal to a particular object may be taken to depend upon the way in which the object is described. Thus it is not an internal property of Scott to have been the author of Waverley, neither is it an internal property of the author of Ivanhoe. But what of the author of Waverley? Is the proposition that the author of Waverley composed Waverley necessarily true? On one interpretation of it it surely is. Even so, one can attach a sense to saying that the person who was in fact the author of Waverley might not have been so. All that is needed for this is that he be capable of being otherwise identified (Russell and Moore, the Analytic Heritage, 158).