Ethics or moral philosophy is the philosophical study of moral phenomena. It investigates normative questions about what people ought to do or which behavior is morally right. It is usually divided into three major fields: normative ethics, applied ethics, and metaethics.
According to Aristotle, how to lead a good life is one of the central questions of ethics.
According to discourse ethics, as formulated by Jürgen Habermas, moral norms are justified by a rational discourse within society.
Philippa Foot was one of the philosophers responsible for the revival of virtue ethics in the 20th century.
The practices of compassion and loving-kindness are key elements of Buddhist ethics.
Morality is the differentiation of intentions, decisions and actions between those that are distinguished as proper (right) and those that are improper (wrong). Morality can be a body of standards or principles derived from a code of conduct from a particular philosophy, religion or culture, or it can derive from a standard that a person believes should be universal. Morality may also be specifically synonymous with "goodness", "appropriateness" or "rightness".
Allegory with a portrait of a Venetian senator (Allegory of the morality of earthly things), attributed to Tintoretto, 1585
Immanuel Kant introduced the categorical imperative: "Act only according to that maxim whereby you can, at the same time, will that it should become a universal law."
