Lecture by Swami Tattwamayananda. The great Indian sage Patanjali wrote major treatises on Ayurveda, Sanskrit grammar, and Yoga. From Samprajnata Samadhi, mastery of nature, we ascend to Asamprajnata Samadhi, freedom from nature. Intensification of practice means constant regulation of the intake of positive food, both mental and physical. Mild, medium and intense levels of practice are possible. The mind cannot keep quiet so it must be fed good spiritual food. In Vedanta, we find that spiritual life is returning to our true home. There is no vacation from spiritual life. We return to our home. That is the meaning of intense spiritual practice. Verses: I.21, I.22