In this volume we have brought together some of the most important contributions of Antoon Vergote to the field of what is now called 'clinical psychology of religion'. Most of these contributions were not published before in English. They cover the field in two ways. On the one hand we selected some articles in which Vergote reflects about the foundations of the (clinical) psychology of religion. This first part of the book is about the psychoanalytic and philosophical-anthropological approach of some major topics in the study of religion : e.g. mythical thinking and symbolisation, moral law and the idea of sin, religious experience... . In this part we also included a critical reflection about the classic psychoanalytic criticism of religion and about the epistemology and the limits of the psychology of religion. The second part, on the other hand, contains clinical-empirical and psycho-historical studies about concrete religious phenomena. The first section of this part is, amongst other topics, about the psychological approach of the person Jesus, about the psychological profile of the priest and, about some aspects of folk religiosity. The second section deals with problems in the field of mental health and religion : the differentiation of true and false mysticism, religion and psychopathology and a psychological approach of the experience of visions and apparitions.