The Bhagavad-gita is a conversation between Arjuna, a supernaturally gifted warrior about to go into battle, and Krishna, his charioteer. In the course of giving Arjuna all manner of spiritual and material advice, Krishna explains karma, the self, the Supreme Self, the purpose of yoga, the difference between our self and our material body, how our environment affects our consciousness, and how to attain the perfection of life.