Ten lectures given in Dornach, 10th to 25th October, 1915
Ways of thinking and the corresponding spiritual and social structures in any period of time are not accidental but are brought about by certain groups of human beings working systematically for good or evil. Steiner gives an account of the activity of these groups working behind the scenes in the 19th century and points out their effects even in our time.
These ten lectures are part of the lecture series entitled, Occult Movements of the 19th Century, and published in German as, Die Okkulte Bewegung Im Neunzehnten Jahrhundert und Ihre Beziehung zur Weltkultur. Bedeutzames aus dem aeusseren Geistesleben um Mitte des neunzehnten Jahrhunderts. GA# 254 (formerly 164.2).