Raja Yoga the Yoga of Meditation

Yoga falls into four categories. The first, being the yoga of devotion, is termed bhakti yoga. The second, being yoga of service, is termed karma-yoga. The third, being yoga of wisdom, is termed jnana-yoga. And the fourth, being yoga of meditation, is termed raja-yoga. There are, of course, other forms of yoga that are accessories to the four main categories. What we are concerned with here is raja-yoga.