The idea that all ethical problems can be solved with just one moral principle can never do justice to the complexity of moral reality. This book thus goes against a considerable part of the ethical tradition. It is the guiding conviction that although traditional ethical theories each correctly identify a partial aspect of moral reality, in application it is wrongly believed that the theory fundamentally covers the whole of moral reality. The complexity of a difficult moral problem can only be adequately appreciated by means of a pluralistic ethical method.