<p>'All existence is spirit. Just as ice is water, so matter is also spirit. Mineral, vegetable, animal or human ? all are a condensed form of spirit.' ? Rudolf Steiner. In the two lecture courses featured in this volume, Rudolf Steiner presents a radical new paradigm. Tackling the central dilemma of modern civilization ? the polarisation of science and spirituality ? he seeks to broaden natural science through a comprehensive spiritual science. ...