奥义书——吠陀传统的哲学核心，阐明梵、真我、知识、行动与解脱的本质。十部主要奥义书，另加精选的毗湿奴派小奥义书。
On Hayagrīva — the horse-headed form of Viṣṇu, guardian of the Vedas: a mantra, a hymn, and a promise of understanding to one who calls upon Him. A short book, read before study.