Philosophy arose in India as an enquiry into the mystery of life and existence. Indian Philosophy refers to several traditions of philosophical thought that originated in the Indian subcontinent. Over centuries, India’s intellectual exploration of truth has come to be represented by six systems of philosophy. These are known as Vaishesika, Nyaya, Samkhya, Yoga, Purva Mimansa and Vedanta or Uttara Mimansa. In most Indian philosophical systems, the acceptance of the ideal of moksha, like allegiance to the authority of the scriptures, was only remotely connected with the systematic doctrines that were being propounded. This is a fundamental book on history of science and technology in early days of Indian civilization. The book is meant for students and for people who care more about the central questions of philosophy themselves.