The Shastras contained works of science and philosophy
The Bhagvad Gita a later addition to the Mahabharata enshrines a philosophical doctrine and in it are described the three paths to salvation: karma, gyan and bhakti
The Puranas is important as they were the main influence in the development from early Vedic religion to Hinduism
Nagarjuna was also termed as the Indian Einstein. He proposed the Theory of Relativity in his time in the form of a Sutra which is also called as the Prajna Parimata Sutra. He was a great patron of Mahayana doctrine.