second way of interpreting the title refers to the fact that buddha-nature is an "everlasting continuum of the mind" (as noted by The 14th Dalai Lama) or a "continuous flow" (as Rongtön Sheja Kunrig and Go Lotsawa gloss the title). This pure continuum may be covered over by fleeting stains, but nevertheless remains as a continuity through many lives and into Buddhahood. History A Sanskrit RGVV was brought to China by Ratnamati (勒那摩提) in 508 CE where he translated the text to Chinese. This shows the whole text was available in India in the early 6th century. According to Kazuo Kano, no Indian texts quote the RGVV from the 7th to the 10th century, but it is cited in a significant number of Indian texts from the 11th to the 13th century. Structure and textual layers According to Brunnhölzl, "the text known as RGVV consists of three parts: (1) basic verses, (2) commentarial verses, and (3) prose commentary." Brunnhölzl also notes that most scholars agree that the text is "a compilation of different elements" and they have "made attempts to identify the “original” core verses of the text". In certain textual transmissions, the Ratnagotravibhāgavyākhyā (RGVV) commentary has become integrated with the RGV verses through the passage of time, even though there are also distinct standalone editions of the RGV and RGVV. Takasaki provided a valuable textual analysis of the Sanskrit critical edition edited by Johnston with those versions preserved in certain editions of the Chinese and Tibetan canon. Takasaki identified a textual core of the RGV with the most ancient verses of this core being extant in the Chinese. Extensive analysis of the critical Sanskrit text edited by Johnston (1950) with the Tibetan and Chinese versions, identified that the verses actually comprise two separate groups: a core set of 27 ślokas and 405 additional or supplementary verses of explication (Skt. kārikā). The work of Takasaki and Johnston has been critiqued by the extensive reviews of such scholars as De Jong and Lambert Schmithausen. Schmithausen disagrees with Takasaki's opinion that the earliest core of the RGV consists of 27 verses and instead opines that "the original RGV is constituted by the totality of basic verses. But this original RGV seems to have made use of several (perhaps only partly remodelIed) older materials." Authorship The text is attributed to the Indian Jianyi (賢慧, Sanskrit reconstruction: *Sāramati or *Sthiramati) in the earlier Chinese