The Shastras contained works of science and philosophy
The Puranas is important as they were the main influence in the development from early Vedic religion to Hinduism
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 last veda called the Atharva Veda is a collection of magic spells and charms to ward off the evil spirits and diseases. It is considered a non-Aryan work and is the latest addition to the Vedas in later Vedic age.
Fa Hien or Faxian who was a famous Chinese traveler, visited India during his reign of Chandragupta II. He came through land route and went back through sea route.