Patañjali (Devanāgarī पतञ्जलि) is the compiler of the Yoga Sutras, a major work containing aphorisms on the philosophical aspects of min and consciousness, and also the author of a major commentary on Panini's Ashtadhyayi, although many scholars do not consider these two texts to have been written by the same individual. In recent decades the Yoga Sutra has become quite popular worldwide for the precepts regarding practice of Raja Yoga and its philosophical basis. "Yoga" in traditional Hinduism involves inner contemplation, a rigorous system of meditation practice, ethics, metaphysics, and devotion to the one common soul, God, or Brahman.