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。
Ancient embryology: how the body forms month by month, what it is made of, and how much of each. Its most famous passage is the cry in the womb: the child remembers everything and promises to remember — and forgets it all at birth.