On Yuan Chwang's Travels in India, 629–645 A.D. v1.c15.100

v1.c15.100

By the "three ways of transmigration" of Buddha's address to the maidens the pilgrim probably meant us to understand the way of pain, the way of perplexity, and the way of moral action. These three "ways" are the agents which by their constant interaction produce the ceaseless revolutions of life and death.⁴ But the term san-t'u (or its equivalent san-tao) is also used by the Buddhists in several other senses.