In Four Great Religions, Theosophist and reformer Annie Besant explores the core principles, ethical teachings, and mystical dimensions of four major world faiths—Hinduism, Zoroastrianism, Buddhism, and Christianity—with an eye toward their shared truths and transcendent wisdom. Drawing from sacred texts, spiritual traditions, and comparative analysis, Besant argues that these religions, far from being contradictory, are complementary expressions of one eternal truth adapted to different peoples and times. She examines karma and dharma in Hinduism, the cosmic dualism and fire symbolism in Zoroastrianism, the Noble Eightfold Path in Buddhism, and the message of love and sacrifice in Christianity. With eloquence and spiritual sensitivity, Besant unveils the metaphysical unity that underlies diverse forms, affirming that all true religion seeks the same goal: the awakening of the soul to its divine nature and its reunion with the Source. Her synthesis is informed by the Theosophical belief in a perennial philosophy—a universal spiritual heritage shared by all humanity. Four Great Religions is not a dry academic survey but a deeply felt meditation on the wisdom of the world's oldest traditions. Besant calls readers to tolerance, spiritual inquiry, and reverence for the diversity of sacred paths, making this work a powerful call for religious pluralism and unity.