this series (050) has been the best descriptions of what Dr Steiner called the Aetheric Christ--and didn't make much sense to me. Until I heard Tazo's lectures 1 - 12 repeatedly. I have now listened about 10 times each, and took notes when I at last understood the main theme of each lecture. This series has changed my life more than any of the others, and I have heard most of them!! Highly recommended