Bhagavad gita is set to liberate the individual from all bonds. A way is shown to the individual to free himself from all the mental dilemmas and doubts. In this study of Bhagavad Gita an endeavour is made to trace the development of human thought from origin of the existences to the culmination of Indian philosophy in the form of Gita. It also explains and discusses various concepts of the Indian philosophy when preceded Gita i.e., the Vedas and Upanishads. Rational and scientific analysis of the doctrines of the Gita has been described in the simplest of terms.