This document discusses different ethical theories including teleological theories like utilitarianism which focus on consequences, deontological theories like Kant's which focus on duties and rules, and virtue ethics which focus on character. It provides details on the classical utilitarian theories developed by Jeremy Bentham and John Stuart Mill, which advocate determining the morality of actions based on their consequences in order to achieve the greatest happiness for the greatest number of people. The document also discusses act and rule utilitarianism and some criticisms of utilitarianism.