Thanks are due to the authors and to the Editor of Behavioral Science for permission to quote from ‘Toward a Theory of Schizophrenia’ by G. Bateson, D. D. Jackson, J. Haley, and J. Weakland; to the Editor of the British Journal of Medical Psychology in respect of ‘The Effort to Drive the other Person Crazy – an Element in the Etiology and Psychotherapy of Schizo-phrenia’ by H. F. Searles; to Professor M. Buber, George Allen & Unwin, and the Editors of the Hibbert Journal and Psychiatry in respect of ‘Distance and Relation’ and ‘Elements of the Inter-human Contact’; to Jean Genet in respect of The Balcony, translated by Bernard Frechtman; to The Harvill Press in respect of The Double: A Poem of St Petersburg by F. Dostoevsky; to the Hogarth Press in respect of Trends in Psycho-Analysis by M. Brierley; to Librairie Gallimard in respect of Saint Genet. Comédien et Martyr by Jean-Paul Sartre (tous droits réservés); to The Melanie Klein Trust in respect of ‘The Nature and Function of Phantasy’ by Susan Isaacs from Developments in Psycho-Analysis, edited by J. Rivfère; to Methuen & Co. in respect of Being and Nothingness by Jean-Paul Sartre; to The Olympia Press in respect of Notre Dame des Fleurs by Jean Genet; to Penguin Books in respect of Crime and Punishment by F. Dostoevsky; to The Psychoanalytic Quarterly Inc. in respect of Thalassa: A Theory of Genitality by S. Ferenczi.