The author analyzes the nature of philosophical activity to show how questions of value still constitute the core of philosophy, and to make plain the choices and obligations these questions impose. The book begins by showing the world's need for a changed philosophy; it ends by showing how philosophy needs a changed world, a world in which humanity can be at home. Thus it is a statement of a radical philosophy and a philosophy for radicals - based unashamedly on a commitment to both morality and pluralism.