At the heart of this book are the well-loved Bridge lectures, which appear in English for the first time in their wider context. Steiner discusses the solid, fluid, air and warmth bodies, and how these are connected with the various ethers, the "I" and human blood. He goes on to describe how ideals and ideas impact the various aspects of the human constitution how morality is a source of "world creativity"--with moral thinking imbuing life into substance and will. Moral ideas have a positive effect, he says, whereas theoretical ones have a negative impact. In the realm of the moral, a new natural world comes into being, and thus the moral order and the natural order are intertwined.