5 lectures, Dornach, March 31 - April 8, 1923 (GA 223)
Rudolf Steiner

Human beings must attain an esoteric maturity in order to think not merely abstractly, but to be able to think so concretely that they can again become festival-creating. Then it will be possible again to unite something spiritual with the cycle of sense phenomena.

These five lectures were given at Easter, 1923. Rudolf Steiner, in a fully conscious way, laid a foundation for celebrating the Christian festivals --Christmas, Easter, St. John's, and Michaelmas. This is begun with a description of how the...