This lecture was given in German under the title Das Geheimnis der
menschlichen Temperamente and is included in Wo und wie findet
man den Geist? (Vol. 57 in the Bibliographic Survey). It was
translated from the German by Brian Kelly.
Published in the United States of America by Anthroposophic Press,
Bell's Pond, Star Route, Hudson, New York 12534.
Distributed in the United Kingdom by Rudolf Steiner Press, 38 Museum
Street, London WC 1, England.