Hindu texts to an author, as a derivative work they are considered less authoritative than "Sruti" in Hinduism. The Smrti literature is a vast corpus of diverse texts, and includes but is not limited to Vedāngas, the Hindu epics, the Sutras and Shastras, the texts of Hindu philosophies, the Puranas, the Kāvya or poetical literature, the "Bhasyas", and numerous "Nibandhas" (digests) covering politics, ethics, culture, arts and society. Many ancient and medieval Hindu texts were composed in Sanskrit, many others in regional Indian languages. In modern times, most ancient texts have been translated into other Indian languages and some in Western languages.
Vedas are largely philosophical works, some in dialogue form. They are the foundation of Hindu philosophical thought and its diverse traditions. Of the Vedic corpus, they alone are widely known, and the central ideas of the Upanishads are at the spiritual core of Hindus. The four Vedas were transmitted in various s (branches, schools). Each school likely represented an ancient community of a particular area, or kingdom. Each school followed its own canon. Multiple recensions are known for each of the Vedas. Thus, states Witzel as well as Renou, in the 2nd millennium BCE, there was likely no canon of one