subtitle: Lectures to the Workers at the Goetheanum
In these lectures - also published in From Mammoths to Mediums - Steiner covers a wide range of topics, from the development of independent thinking and the ability to think backward, to the uses of what seems boring and the reversal of thinking between the physical and spiritual worlds.
Trans. W. Stuber, M. Gardner (4 lectures, Dornach, June 28-July 18, 1923, GA 350); 96pp; 21 x 14 cm;