Philosophy may be divided into three fields: physics (the study of the physical world), ethics (the study of morals), and logic (the study of logical principles). These fields may involve either "empirical" study of our experiences, or "pure" analysis of concepts. "Metaphysics" is the study of pure concepts as they relate to moral or physical experience.
People generally presume that moral principles must apply to all rational beings at all places and all times. Moral principles must therefore be based on concepts of reason, as opposed to particularities of culture or personality. The goal of the Grounding for the Metaphysics of Morals is to develop a clearer understanding of moral principles, so that people may better avert distractions.
