[18.] Solomon Maimon: an Autobiography, translated from the German by J. Clark Murray, p. 28 (1888). The original appeared in 1792.
[19.] Alfred Edersheim, The Life and Times of Jesus the Messiah, II. 689 (1883).
[20.] "There exists in Jewish literature no book more difficult to understand than the Sepher Yetzirah."--Phineas Mordell in the Jewish Quarterly Review, New Series, Vol. II. p. 557.
[21.] Paul Vulliaud, La Kabbale Juive: histotre et doctrine, 2 vols. (Émile Nourry, 62 Rue des Écoles, Paris, 1923). This book, neither the work of a Jew nor of an "anti-Semite," but of a perfectly impartial student, is invaluable for a study of the Cabala rather as a vast compendium of opinions than as an expression of original thought.
[22.] "Rab Hanina and Rab Oschaya were seated on the eve of every Sabbath studying the Sepher Ietsirah; they created a three-year-old heifer and ate it."--Talmud treatise Sanhedrim, folio 65.
[23.] Koran, Sura LXXXVII. 10.
[24.] Zohar, section Bereschith, folio 55, and section Lekh-Lekha, folio 76 (De Pauly's translation, Vol. I. pp. 431, 446).
[25.] Adolphe Franck, La Kabbale, p. 39; J. P. Stehelin, The Traditions of the Jews, I. 145 (1748).
[26.] Adolphe Franck, op. cit., p. 68, quoting Talmud treatise Sabbath, folio 34, Dr. Christian Ginsburg, The Kabbalah, p. 85; Drach, De l'Harmonie entre l'Église et la Synagogue, I. 457.
[27.] Adolphe Franck, op. cit., p. 69.