Satchitananda (IAST: Satcitānanda) or Sacchidananda representing "existence, consciousness, and bliss" or "truth, consciousness, bliss", is an epithet and description for the subjective experience of the ultimate, unchanging reality in Hinduism called Brahman. == Etymology == Satchitananda (Sanskrit: सच्चिदानन्द) is a compounded Sanskrit word consisting of "sat", "cit" and "ananda", all three considered as inseparable from the nature of ultimate reality called Brahman in Hinduism. The different forms of spelling is driven by euphonic (sandhi) rules of Sanskrit, useful in different contexts. sat...

In Hindu philosophy, turiya (Sanskrit: तुरीय, meaning "the fourth") or caturiya, chaturtha, is pure consciousness. It is the background that underlies and transcends the three common states of consciousness of waking consciousness, dreaming, and dreamless sleep. == Mandukya Upanishad == Turiya is discussed in verse 7 of the Mandukya Upanishad, but the idea is found in the oldest Upanishads. For example, chapters 8.7 through 8.12 of Chandogya Upanishad discuss the "four states of consciousness" as awake, dream-filled sleep, deep sleep, and beyond deep sleep. Similarly, Brihadaranyaka Upanishad...