Authorized translation from shorthand reports unrevised by the
lecturer, by permission of the Rudolf Steiner Nachlassverwaltung,
Dornach, Switzerland. Lecture I, translated by D. Osmond, II-III, by
The original German texts of these lectures can be found in the
Collected Edition of Rudolf Steiner's works, No. 158 in the
Bibliographical Survey, 1961.