In "Keabadian Jiwa," Michael Newton offers a thought-provoking exploration of the eternal soul, providing insights into the human experience that transcend the boundaries of conventional understanding. While some may question the scientific rigor of his research, Newton's work has undoubtedly contributed to a deeper understanding of human consciousness, spirituality, and the nature of existence.

Newton, M. (2005). Life Between Life: Hypnotherapy for Spiritual Growth and Healing. Hay House Inc.

While Newton's work has been widely acclaimed, some critics have raised concerns about the scientific validity of his research methods and findings. Hypnosis, as a therapeutic technique, can be susceptible to suggestion and imagination, leading some to question the accuracy of patients' recalled memories.