In This Collection, Rudolf Steiner discusses Lemuria and Atlantis; Chinese and Indian cultures; raw food; vegetarianism; children's nutrition; manure and soil; hardening of the arteries; the sense of smell; planetary influences; weather and its causes; creation of the world; origin of the human being; Saturn, Sun, and Moon; Darwinism; earth strata and fossils; Biela's comet; evolution of human culture; lightning, and volcanoes.