According to what has been said, identification or composition of persons serves various purposes in the dream; in the first place, to represent a feature common to the two persons; secondly, to represent a displaced common feature; and thirdly, even to give expression to a community of features that is merely _wished for_. As the wish for a community between two persons frequently coincides with the exchanging of these persons, this relation in the dream is also expressed through identification. In the dream of Irma’s injection I wish to exchange this patient for another—that is to say, I wish the latter to be my patient as the former has been; the dream takes account of this wish by showing me a person who is called Irma, but who is examined in a position such as I have had the opportunity of seeing only when occupied with the other person in question. In the dream about my uncle this substitution is made the centre of the dream; I identify myself with the minister by judging and treating my colleague as shabbily as he does. It has been my experience—and to this I have found no exception—that every dream treats of one’s own person. Dreams are absolutely egotistic. In cases where not my ego, but only a strange person occurs in the dream content, I may safely assume that my ego is concealed behind that person by means of identification. I am permitted to supplement my ego. On other occasions when my ego appears in the dream, I am given to understand by the situation in which it is placed that another person is concealing himself behind the ego. In this case the dream is intended to give me notice that in the interpretation I must transfer something which is connected with this person—the hidden common feature—to myself. There are also dreams in which my ego occurs along with other persons which the resolution of the identification again shows to be my ego. By means of this identification I am instructed to unite in my ego certain ideas to whose acceptance the censor has objected. I may also give my ego manifold representation in the dream, now directly, now by means of identification with strangers. An extraordinary amount of thought material may be condensed by means of a few such identifications.[DV]