[FN#373] The Absolute is compared with the ocean, and the phenomenal universe with the waves. Now, if both mind and external objects, as declared above, be nothing at all, no- one can tell what it is that causes these unreal appearances. Therefore this doctrine, we know, simply serves to refute the erroneous theory held by those who are passionately attached to Dharma-laksana, but never clearly discloses spiritual Reality. So that Mahabheri-harakaparivarta-sutra[FN#374] says as follows: "All the sutras that teach the unreality of things belong to an imperfect doctrine (of the Buddha). Mahaprajnya-paramita-sutra[FN#375] says: "The doctrine of unreality is the first entrance-gate to Mahayanism." [FN#374] The book was translated into Chinese by Gunabhadra, A.D. 420-479. [FN#375] This is not the direct quotation from the sutra translated by Hiuen Tsang. The words are found in Mahaprajnya-paramita-sutra, the commentary on the sutra by Nagarjuna. When the above-mentioned four doctrines are compared with one another in the order of succession, each is more profound than the preceding. They are called the superficial, provided that the follower, learning them a short while, knows them by himself to be imperfect; (but) if he adheres to them as perfect, these same (doctrines) are called incomplete. They are (thus) said to be superficial and incomplete with regard to the follower. CHAPTER III THE DIRECT EXPLANATION OF THE REAL ORIGIN[FN#376] 5. The Ekayana Doctrine that Teaches the Ultimate Reality. This doctrine teaches us that all sentient beings have the Real Spirit[FN#377] of Original Enlightenment (within themselves). From time immemorial it is unchanging and pure. It is eternally bright, and clear, and conscious. It is also named the Buddha-nature, or Tathagata-garbha.[FN#378] As it is, however, veiled by illusion from time without beginning, (sentient beings) are not conscious of its existence, and think that the nature within themselves are degenerated. Consequently they are given to bodily pleasures, and producing Karma, suffer from birth and death. The great Enlightened One, having compassion on them, taught that everything in the universe is unreal. He pointed out that the Real Spirit of Mysterious Enlightenment (within them) is pure and exactly the same as that of Buddha. Therefore he says in Avatamsaka-sutra[FN#379]: "There are no sentient beings, the children of Buddha, who are not endowed with wisdom of Tathagata;[FN#380] but they cannot attain to Enlightenment simply because of illusion and attachment. When they are free from illusion, the Universal Intelligence,[FN#381] the Natural Intelligence,[FN#382] the Unimpeded Intelligence,[FN#383] will be disclosed (in their minds)." [FN#376] A. 'The perfect doctrine, in which eternal truth is taught by the Buddha.'