According to John Dewey (1902), ethics is the science that deals with conduct insofar as this is considered to be right or wrong, good or bad. Ethics comes from the Greek word ethos, which means customs or usages, especially belonging to one group as distinguished from another. Later, ethics came to mean disposition or character, customs, and approved ways of acting. Looking at this definition from a critical perspective, one might ask: Ethics approved by whom? Right or wrong according to whom?