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。
Three lines for whose sake the whole book is known: Nārada asks how to be saved in the age of Kali, and Brahmā gives him sixteen names — the great mantra. No fasting, no rite, no renunciation: only the Name, and it is called the sole means.