Avesta as "Fragments Tahmuras"; and the "Hadokht Nask" "volume of the scriptures" with two fragments of eschatological significance. Only texts preserved in the Avestan language count as scripture and are part of the Avesta. Several other secondary works are nonetheless crucial to Zoroastrian theology and scholarship. The most notable among the Middle Persian texts are the "Dēnkard" ("Acts of Religion"), dating from the ninth century; the "Bundahishn" ("Primordial Creation"), finished in the eleventh or twelfth century, but containing older material; the "Mainog-i-Khirad" ("Spirit of Wisdom"), a religious conference on questions of faith; and the "Book of Arda Viraf", which is especially
The Economic Writings of Sir William Petty The Economic Writings of Sir William Petty The Economic Writings of Sir William Petty is a book with texts, written by William Petty (1623-1687), and published in 1899 by Charles Henry Hull (1864-1936), in two volumes. The "Economic Writings" were published together with an introduction about the life and work of William Petty, and did also contain "Natural and Political Observations upon the Bills of Mortality," by John Graunt. This edition of the economic texts of William Petty, the scientist, who is often been called the founder of political economy, is used as a reference work ever since its publication.