Salomon Resnik's exploratory journey through mental space takes us to several mental areas or dimensions, not only those of patients, but also those of the author himself. His clear definition of his principal concept—“in psychoanalysis the concept of mental space is not synonymous with internal world; it includes the external world and interpersonal communication with others” (p. 17)—sets the scene for a short but intensive discussion of each of these three areas. He has, however, already pointed out on the previous