Fundamentalism is a social phenomenon and psychoanalysis can deal with it by adopting some theoretical contributions enabling itself to face such challenges the social domain issues to it.Among the authors who covered, in a very original way, the 'border' between psychoanalysis and 'bordering' disciplines with particular regard to fundamentalism, Janine Puget has an important place. This book is dedicated to her memory since its second edition was published soon after the Argentinean psychoanalyst passed away. Religious fundamentalism is central topic of the chapters: while Vamik D. Volkan focuses on the differences and similarities between the restricted extreme religious groups and the globalized ones, Werner Bohleber and Sverre Varvin show how the fundamentalist mindset can be interpreted psychoanalytically since it is something that usually develops within the context of a fundamentalist movement, political, religious or otherwise, where the ideological aspect may be underdeveloped and the psychological side have become more dominant. According to Bohleber a comparison of the ideational worlds of radical German nationalism after 1918 with Islamist fundamentalism reveals some amazing similarities. For the German psychoanalyst the following unconscious ideational complexes have proved significant in the analysis of radical nationalism and serve as a heuristic basis from which to examine the deep structures of religious-political visions in Islamist fundamentalism: 1) caretaking fantasies and sibling rivalry; 2) purity and the ideational conception of the other; 3) visions of group unity and fantasies of fusion. For Sverre Varvin if religious fundamentalism raises the question of fundamentals, that is how not to lose hold of the fundaments without which there could not be a proper belief system, that adherence to fundaments may develop into fundamentalism, understood as rigid adherence to basic principles, that has, however, seldom been on the agenda in professional and scientific contexts. As tight groups with string inner cohesion may develop within professional and scientific organisations, it should not be a surprise that fundamentalist tendencies may develop in these groups as well. Any organisation that deals with fundaments or have an idea about the essentials may fall prey to fundamentalist tendencies. Psychoanalysis is a case in question here and reflection on the relation between fundaments of psychoanalysis and possible fundamentalist tendencies may thus give insight into possible basic problems within psychoanalysis, a profession that has both scientific claims and practical-clinical tasks.