Many readers encounter A Course in Miracles after exploring other spiritual or philosophical traditions. Some come from non-dual teachings, some from Buddhism or contemplative Christianity, and others from modern spiritual writers. Often, what draws them to the Course is not its novelty, but a sense of recognition. One Truth, Many Doorways places A Course in Miracles in conversation with several wisdom traditions and modern teachers to explore how different teachings approach common human concerns-identity, suffering, perception, and peace. Rather than comparing systems or proposing a synthesis, the book examines points of resonance and contrast that can clarify what makes the Course distinctive. The traditions discussed include Advaita Vedanta, Taoism, Zen Buddhism, Christian mysticism, and selected modern non-dual writers. Each is introduced on its own terms, without technical language or doctrinal argument, allowing the reader to see how similar questions are addressed through different frameworks. This is not a book of spiritual instruction or practice. It does not ask the reader to adopt beliefs or accept metaphysical claims. Instead, it offers a reflective framework for readers who are curious about how non-dual teachings function across traditions, and how A Course in Miracles fits within a wider contemplative landscape. Written with clarity and restraint, One Truth, Many Doorways is intended for readers of A Course in Miracles, as well as those interested in non-duality, comparative spirituality, and the deeper assumptions that shape spiritual inquiry.