The real nature is hidden. How is it hidden? Shankaracharya, the commentator, he uses a very interesting phraseology here. He says, prakrita vishaya vikara vigani he prachanam. Inscrutable means hidden here. Hidden how? The atman. It is you, but it's hidden. So this is a very nice example. At first we are entranced by the movie. But after some time we ask a philosophical question. We ask a spiritual question.
Swami Sarvapriyananda teaches the Katha Upanishad, which is one of India's most revered texts and a part of the Vedas. It is a collection of philosophical poems representing a conversation between the sage Naciketas and Yama (god of death). They discuss the nature of Atman, Brahman and Moksha(liberation).