By Rudolf Steiner

Notes from three lectures given in Berlin
on the 19^th and 26^th of February
and the 5^th of March, 1906
GA 94

Authorized translation from shorthand reports unrevised by the lecturer, by permission of the Rudolf Steiner Nachlassverwaltung, Dornach, Switzerland.

The original German texts of these lectures can be found in the Collected Edition of Rudolf Steiner's works, No. 94 in the Bibliographical Survey, 1961.