Deutsch von Hans Heinrich Schaeder. - Leipzig (Hinrichs) 1938. - ix, 506 p.
"The picture of Zarathustra and Zoroastrianism, which I give here, deviates very substantially from the conventional one. It is gained exclusively by a penetrating linguistic and factual investigation of the Avestic texts themselves. I have consulted the views of other scholars only secondarily, and my references in the notes by no means claim to be exhaustive. Since understanding and explanation of the Avesta are still very imperfect, no one who wants to form a view of its religious content can avoid working on the original texts, and this work must always be the main thing for him." (Nyberg, from the Preface ot the original Swedish edition)
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