Supersensible Impulses (in the historical development of humanity) CW 216, a cycle of eight lectures by Rudolf Steiner, translated by Paul King. Given in Dornach from 16 September to 1 October 1922.
1. Lecture 1: Experiences between death and a new birth (Dornach, 16 September, 1922)
6. Lecture 6: The significance of ritual for the future of the earth (Dornach, 29 September, 1922)
7. Lecture 7: The urgent need today to enliven dead thinking (Dornach, 30 September, 1922)
8. Lecture 8: The need for a new openness towards the spiritual world (Dornach, 1 October, 1922)