The prime Upanishad among the many Upanishads written in ancient India, known very widely for its profound philosophical statements. Brhadaranyaka belongs to the Shatapatha Brahmana and is ascribed to Sage Yajnavalkya. Its name is literally translated as "great forest-book". It includes three sections, namely, Madhu Kanda, Muni Kanda (or Yajnavalkya Kanda) and Khila Kanda. The Madhu Kanda explains the teachings of the basic identity of the individual and the Universal Self. Muni Kanda includes the conversations between the sage Yajnavalkya, the great Upanishad philosopher, and his wife, Maitreyi. Various methods of worship and meditation are dealt in the Khila Kanda. The doctrine of “Neti, Neti” (“not this, not this”) is found in this Upanishad which is the negation of all conceptions of self, which is the same as the Anatta doctrine of Buddhism.