This is a quick overview of some relations between utilitarian, deontological, and Aristotelian ethical theories. For links to many excellent internet resources on these ethical theories and others, see Lawrence Hinman's Ethics Updates site.
Rosalind Hursthouse's Comparison
Here is a brief indication of the way Rosalind Hursthouse describes the relationships between the three kinds of theory in the first section of her essay "Virtue Theory and Abortion": | Consequentialism | Deontology | Virtue Theory | example | Mill's utilitarianism | Kantian ethics | Aristotle's moral theory | abstract description | An action is right if it promotes the best consequences. | An action is right if it is in accordance with a moral rule or principle. | An action is right if it is what a virtuous agent would do in the circumstances. | more concrete specification | The best consequences are those in which happiness is maximized. | A moral rule is one that is required by rationality. | A virtuous agent is one who acts virtuously, that is, one who has and exercises the virtues. A virtue is a character trait a human being needs to flourish or live well. |
Classification of Ethical Theories
A More Detailed (But Very Tentative) Comparison
Here are some suggestions about how some of the chief ethical theories would address various issues. This is all pretty tentative, in part because different ethical theories tend to focus on different issues, so it's not always easy to determine how one theory would address the issues that are the chief concern of another theory. Also, many of the categories in the table are not strictly parts of the moral theories, but rather views on other topics (such as personal identity or the nature of rationality) which seem to mesh well with a particular ethical theory. | Consequentialism | Deontology | Virtue Ethics | example | utilitarianism | Kantianism | Aristotelianism | model of practical reasoning | means-ends reasoning: how do I get what I want/what's good? | how do I determine what's rational? | what habits should I develop? | personal identity (what is essential to the self?) | will & reason + desires | will & reason (desires are thought of as outside forces with the potential to thwart rationality) | will& reason + desires + character traits | rationality | getting what you want | doing what reason requires (at a minimum, not having…