The document discusses the theory of rasa as first mentioned by Bharatamuni in the Natyashastra. It states that rasa involves the human senses creating emotions in the mind through performance arts like dance, music, theater, and literature. Bharatamuni outlined nine original rasas or sentiments including erotic, comic, angry, compassionate, disgust, fearful, heroic, wonderful, and relaxed. Later critics added two more rasas. The document provides details on each rasa's associated emotions, examples, colors, and presiding deities.