This document provides an introductory overview of Rasa theory, which originated with Bharata in the Natyasastra. It discusses the eight main rasas or emotional responses - astonishment, terror, love, sorrow, anger, disgust, mirth, and energy. Each rasa is said to arise from different causal factors and have distinct characteristics. For example, love refers to deep attachment between individuals, while anger results from serious offenses. The document also defines key terms related to Rasa theory and cites sources to provide historical and scholarly context.