By Swami Vivekananda, Jnana-Yoga, the Path of Knowledge, describes the essence of Vedanta philosophy - the wisdom of the Vedas, Upanishads, and the Bhagavad Gita in a modern scientific manner. Jnana-Yoga, along with Swami Vivekananda's Karma-Yoga, Bhakti-Yoga, and Raja-Yoga, are considered classics and outstanding treatises on Hindu philosophy. The Swami's deep spiritual insight, fervid eloquence, and broad human sympathy, shine forth in these works and offer inspiration to all spiritual seekers.Swami Vivekananda, India's first spiritual and cultural ambassador to the West, came to represent the religions of India at the World Parliament of Religions, held at Chicago in connection with the World's Fair (Columbian Exposition) of 1893. His message of the unity of humankind and harmony of religions was embraced by the public and press of the time as representing the essence of the Parliament. The Swami wished to create a bridge between the East and the West by bringing to America the gift of India's ancient spirituality, in exchange for the scientific and industrial outlook of the West. After four years of traveling and teaching in America and Europe, the Swami returned to India, where he is revered as a "Patriot Saint." The government of India has declared his birthday a national holiday. In 1976 on the occasion of the American Bicentennial, Swami Vivekananda was honored by the Smithsonian Institution's National Portrait Gallery as one who came to America from abroad during the past 200 years and made a significant impact on its spiritual development.