The Bhagavad Gita is a comprehensive spiritual guide of Hinduism, which includes the essence of the Vedas, the Upanishads, and all the other systems of Hindu philosophy. It therefore incorporates infinite wisdom in 700 verses. The Gita has noble philosophy, art and literature. The subject matter is in the form of a dialogue between Krishna and Arjuna. The thoughts expressed by Krishna are quite deep. Mahatma Gandhi said that "when disappointment stares me in the face and all alone I see not one ray of light, I go to the Bhagavad Gita. I read a verse here and there, I immediately begin to smile in the midst of overwhelming tragedies - and my life has been full of tragedies - and if they have left no visible, no indelible scar on me, I owe it all to the teachings of the Bhagavad Gita".