Work is a many-sided human enterprise that has been written about from a great many different points of view, representing almost every field of knowledge and almost every level of our social structure. Merely to identify these points of view is an impressive task. The subject of work has been written about by theologians and philosophers, by poets and novelists, by historians, economists, and sociologists, by biologists and naturalists, by politicians, by essayists and journalists. It has...