Lecture by Swami Tattwamayananda. Dispassion leads to mastery of nature. The Samkhya philosophy explains the evolution of the material universe from Prakrti to the entire physical and mental world. In addition, there is a sentient witness Purusha. Dispassion leads to Samprajnata Samadhi, concentration filled with transcendental insight, into everything in the material world. This leads to mastery over nature. According to Swami Vivekananda, the second method of concentration is to concentrate directly on Spirit. This leads to freedom from nature. Verse: I.17