法華玄論 2.30

2.30

Answer: The teaching is not shallow; it was merely spoken with an altered thrust in response to the recipients' awakening. Just as it is the same medicine, but those who have not lost their minds take it first, while those who have lost their minds take it later; just as it is the same single correct Path, but the sharp awaken first, while the dull awaken later. The Nirvāṇa-sūtra and the Lotus Sūtra have no difference whatsoever.