Vedas are the most ancient, revered, and sacred of the world's scriptures. The Vedas reveal the root of all the knowledge and also called as “Pramana Shastra” (The proof or the base of all the knowledge and by itself does not need a proof). The Vedas were not written by any human, but was revealed to the human through the ancient Rishis (The seers) during their super-conscious state or Tapas. Hence the ancient Rishis were not the authors of Vedas, but only the instrument through which the Vedas were made available to human.