In this book, readers will find a precise and fascinating approach to Lacanian psychoanalytic practice with children. Thus, Pablo Peusner allows us a glimpse into the work he does with his young patients, while unraveling the most sinuous recesses of Lacanian theory, allowing himself to be guided by the clinical case and allowing theory to be intertwined with practice. This seminar was and continues to be a challenge, just like the experience we encounter in any clinical case with children. The desire that does not relent in the face of clinical practice with children is the desire that seeks to maintain the validity of Freud's living discovery. Taught with theoretical fluency and clinical rigor, readers will find in this book a path to thinking about Lacanian psychoanalytic practice with children in a different way, perhaps more playful in Peusner's own style, detailing that the symptom is not the illness and that each person must find their own style of working in the office.