The texts of six decades gathered in this volume show the wonderful bridge that Viktor Frankl made between psychiatry, philosophy and psychology. Includes an unpublished prologue by Alexander Batthyány. We would misunderstand his objective if we did not contemplate in these three areas the inseparable unit that Frankl builds. Without the inclusion of the philosophical dimension of one's concept of the world, the psychotherapeutic effort will remain sterile. These studies will help understand this claim from its genesis to know how to treat the suffering man of our day.