"I want to see all oppressed people throughout the world free. And the only way we can do this is by moving toward a revolutionary society where the needs and wishes of all people can be respected.' With these words the radical philosophy professor Angela Davis paraphrases Isaiah's ancient messianic dream of the lion that will peacefully lie down with the lamb in a completely good world. But what the Biblical prophet perhaps could not know is contained with a clarity that leaves nothing to be desired in the opening sentence of an address of the French Senate to Napoleon I: "Sire, the desire for perfection is one of the worst maladies that can affect the human mind."