(en) « It's a very strange book, and I've even told prof. Heisenberg, my fellow physicist, to get a copy and keep it on his desk. I urged him to dip into it when he's handicapped by some problem. The strangeness of this book may relax or possibly inspire him. [...] Mme Blavatsky is a bit wild and somewhat irrational and speaks as if she were the Oracle of Delphi. But il will admit that I find interesting observations in her book which was published, as you know, back in 1888, at a time when physics and science were in their swaddling clothes. » (Source : Jack Brown, « I visit Professor Einstein », Ojai Valley News, (lire en ligne).
bnf.fr
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"Une esquisse de la théosophie", C. W. Leadbeater, traduit de l'anglais par Guillaume de Fontenay, Publications théosophiques, 1903, p. 7, "Ce qu'est la théosophie" [lire en ligne]
(en) Sylvia Cranston, HPB - The Extraordinary Life and Influence of Helena Blavatsky, Founder of the Modern Theosophical Movement, New York, G.P. Putnam’s Sons, (ISBN978-0-87477-688-1, lire en ligne), p. 434-435, 605-606
(en) Peter Levenda, The Hitler Legacy : The Nazi Cult in Diaspora : How it was Organized, How it was Funded, and Why it Remains a Threat to Global Security in the Age of Terrorism, Nicolas-Hays, Inc., , 320 p. (ISBN978-0-89254-591-9, lire en ligne), p. 34
(en) Richard S. Levy, Dean Phillip Bell et William Collins Donahue, Antisemitism : A Historical Encyclopedia of Prejudice and Persecution, ABC-CLIO, , 828 p. (ISBN978-1-85109-439-4, lire en ligne), p. 73
