Cosmic New Year: Thoughts for new year 1920, a set of 5 lectures by Rudolf Steiner. Volume 195 in the collected works.
For your convenience, below is a zip file of this entire set of lectures. It does require that you have an unzipping utility of some kind on your computer. For you mac people this is built in.
The Entire Book Cosmic New Year: Thoughts for new year 1920
1. The three streams of cultural life (Stuttgart, December 21, 1919)
2. A Christmas Lecture (Stuttgart, December 25, 1919)
3. The Mystery of the Human Will (Stuttgart, December 28, 1919)
4. The relationship of human life to the past and the future regarded as a mirroring process (Stuttgart, December 31, 1919)
5. The dogma of revelation and the dogma of mere sense experience (Stuttgart, January 1, 1920)