This work is an exchange of letters between Jung and Dr. R. Loy, the doctor in charge of the sanatorium L'Abri in Montreux-Territet. This exchange was first published by Franz Deuticke Verlag, Leipzig and Vienna in 1914, and printed by Dr. Loy himself, who included a forward. This exchange of letters between Carl Jung and Dr. R. Loy, a prominent psychiatrist, captures a rich dialogue on the role of psychoanalysis in therapy. In this correspondence, Jung critiques traditional suggestive therapy and hypnosis, advocating for a more exploratory approach that encourages the patient to confront their unconscious conflicts directly. Jung’s letters express his belief that therapy should not merely aim to suppress symptoms but to facilitate deeper psychological development and individuation. These letters reveal Jung's philosophical views on the therapeutic process and mark his distancing from Freud's methods. This edition is a new translation with an Afterword by the Translator, a philosophic index of Jung's terminology and a timeline of his life and works. A beautiful example of the debates within the budding 20tth-century field of Psychology, Dr. Loy and Dr. Jung discuss various aspects of psychoanalysis, the role of the therapist and the nature of psychological healing. Dr Loy, who practised suggestive therapy and later studied Freudian psychoanalysis, expresses scepticism about some of Freud's interpretations, particularly the universal symbolism of dreams and their exclusively sexual connotations. Jung responds by acknowledging the value of various psychotherapeutic methods, including suggestive therapy, while stressing the importance of understanding the moral conflicts behind neurotic fantasies. He criticises the cathartic method and expresses doubts about the therapeutic value of reliving traumatic events, which he sees as often fantastical or exaggerated. Both discuss the role of the therapist's personality in the healing process and the importance of the patient's trust in the therapist. Jung criticises the use of hypnosis and suggestive methods, preferring direct engagement with the patient's psyche. He argues for a psychoanalytic approach that seeks to understand underlying moral conflicts and encourages the patient's self-discovery and personal growth. Loy's research explores the practical application of psychoanalysis, the challenge of conflicting literature in the field, and the potential influence of the therapist's suggestions on the patient's psyche. Jung emphasises the importance of the analyst's neutrality and the need for the patient to find his or her own path to healing, arguing against any form of suggestion that would impose the therapist's beliefs or goals on the patient.