The document provides an introduction to the ancient Indian text Natyashastra. It states that Natyashastra was created by the god Brahma and recorded by the sage Bharata. It details that Natyashastra is one of the world's largest theatre manuals, covering aspects like stage, dance techniques, acting styles, and the theory of emotions or rasas. The document also summarizes some key concepts from Natyashastra like abhinaya physical storytelling, mudras or hand gestures, and the actor's tools of costumes, words, body language and emotions.