Avesta word for "praise-song" (Bartholomae: "Lobgesang"); that word is not actually attested in any text. The surviving texts of the Avesta, as they exist today, derive from a single master copy produced by Sasanian Empire-era (224–651 CE) collation and recension. That master copy, now lost, is known as the 'Sassanian archetype'. The oldest surviving manuscript ("K1") of an Avestan language text is dated 1323 CE. Summaries of the various Avesta texts found in the 9th/10th century texts of Zoroastrian tradition suggest that a significant portion of the literature in the Avestan language has been lost. Only about one-quarter of the Avestan
The Book of the Book the "New York Review of Books", stating "Ignorance, I will admit, is no crime, and I am sure that Dr. Elwell-Sutton does not claim to be a literary man. But motivation has its mysteries." A review in Studies in Comparative Religion stated "The Book of the Book, which purports to be an object lesson in the problem of the container and the content, consists of some fifteen pages of print bound together with over 250 blank pages". The Book of the Book The Book of the Book is a book by Idries Shah. The majority of the book's 200 pages