 An initial naïve attempt at a descriptive definition of “morality” might take it to refer to the most important code of conduct put forward by a society and accepted by the members of that society. But the existence of large and heterogeneous societies raises conceptual problems for such a descriptive definition, since there may not be any such society-wide code that is regarded as most important. As a result, a definition might be offered in which “morality” refers to the most important code of conduct put forward and accepted by any group, or even by an individual. Apart from containing some prohibitions on harming (certain) others, different moralities—when “morality” is understood in this way—can vary in content quite substantially.