YOGA - As Philosophy and Religion by Surendranath DasguptaPrefaceContentsBook I - Yoga Metaphysics:    1. Prakriti    2. Purusha    3. The Reality of the External World    4. The Process of Evolution    5. The Evolution of the Categories    6. Evolution and Change of Qualities    7. Evolution and GodBook II - Yoga Ethics and Practice:    8. Mind and Moral States    9. The Theory of Karma    10. The Ethical Problem    11. Yoga Practice    12. The Yogangas    13. Stages of Samadhi    14. God in Yoga    15. Matter and MindAppendixIndex