J. C. Chatterji’s *Philosophie ésotérique de l'Inde* offers a concise exploration of Indian mystical traditions. First published in the early twentieth century, the 1976 paperback edition presents the original French text in a compact 134‑page format, making it accessible to scholars and general readers alike. The book traces the philosophical underpinnings of esoteric thought in India, drawing on classical sources and contemporary interpretations. Its clear prose and focused scope provide a valuable reference for those studying comparative spirituality and the history of Indian philosophy.