Lecture given by Dulal Chandra dasa on February 4th, 2010 in Winston Salem, NC on the Bhagavad-gita As It Is.Arjuna inquires into the nature of material nature in the 13th chapter of Bhagavad-gita. His questions specifically deal with the material environment, the body, the knower of the body, and the Supreme who accompanies the individual souls in all bodies. This detailed information is the foundation of spiritual knowledge and is the actual purpose of human life.