This new edition of Roger Money-Kyrle's classic work is published together with three of his late papers, 'Cognitive development', 'The aim of psychoanalysis', and 'On being a psychoanalyst'. Its intention is to introduce new readers to this key Kleinian thinker, whose influence has been quiet and uncontroversial but deep and formative. The book also includes Donald Meltzer's discussion of the paper on 'Cognitive development'.