The remarkable discussions in these two volumes took place between Rudolf Steiner and workers at the Goetheanum, Switzerland, who chose the varied subject matter. The astonishing nature of his responses the questions--their insight, knowledge, and spiritual depth--is testimony to his outstanding ability as a spiritual initiate and teacher. Accessible and stimulating, the records of these sessions are both entertaining and profound. In From Crystals to Crocodiles, Steiner discusses speech and languages; lefthandedness; dinosaurs; Lemuria; turtles and crocodiles; oxygen and carbon; ancient giant oysters; the moon, sun, and earth; the Old Testament; the real nature of Adam; breathing and brain activity; dreams; sugar; the liver and perception; brain cells and thinking; illnesses such as cancer and its origin, migraines, and diabetes; the eyes of animals; Paracelsus; alcohol, and more.