A Sanskrit word for inner soul or self, Aatma is the first principle in Hindu philosophy, especially in the Vedanta school of Hindusim. In this episode, Devdutt Pattanaik tells us how the concept of Aatma developed since the Vedas. He briefly narrates the different Hindu schools of thought and describes a major point of difference between Hinduism and Buddhism Hinduism believes that there is Aatma in every being where as Buddhism does not believe in either soul or self. He also talks about how Aatma is perceived in Jainism, Christianity and Islam.