I
IT is only rarely that a psycho-analyst feels impelled to investigate the subject of aesthetics, even when aesthetics is understood to mean not merely the theory of beauty but the theory of the qualities of feeling. He works in other strata of mental life and has little to do with the subdued emotional impulses which, inhibited in their aims and dependent on a host of concurrent factors, usually furnish the material for the study of aesthetics. But it does occasionally happen that he has to interest himself in some particular province of that subject; and this province usually proves to be a rather remote one, and one which has been neglected in the specialist literature of aesthetics. The subject of the ‘uncanny’1 is a province of this kind. It is undoubtedly related to what is frightening—to what arouses dread and horror; equally certainly, too, the word is not always used in a clearly definable sense, so that it tends to coincide with what excites fear in general. Yet we may expect that a special core of feeling is present which justifies the use of a special conceptual term. One is curious to know what this common core is which allows us to distinguish as ‘uncanny’ certain things which lie within the field of what is frightening. As good as nothing is to be found upon this subject in comprehensive treatises on aesthetics, which in general prefer to concern themselves with what is beautiful, attractive and sublime—that is, with feelings of a positive nature—and with the circumstances and the objects that call them forth, rather than with the opposite feelings of repulsion and distress. I know of only one attempt in medico-psychological literature, a fertile but not exhaustive paper by Jentsch (1906). But I must confess that I have not made a very thorough