Kosho Yamamoto, translator of the full-length Nirvana Sutra, expresses the view that the non-Self doctrine of the Buddha's earlier teaching phase is an expedient only and that in the Nirvana Sutra a hidden teaching on the True Self is disclosed by the Buddha:
He [the Buddha] says that the non-Self which he once taught is none but of expediency ... He says that he is now ready to speak about the undisclosed teachings. Men abide in upside-down thoughts. So he will now speak of the affirmative attributes of nirvana, which are none other than the Eternal, Bliss, the Self and the Pure.[119]