Concept

Ethics

Overview

Ethics is the philosophical study of moral phenomena. Also called moral philosophy, it investigates normative questions about what people ought to do or which behavior is morally right. Its main branches include normative ethics, applied ethics, and metaethics.

Normative ethics aims to find general principles that govern how people should act. Applied ethics examines concrete ethical problems in real-life situations, such as abortion, treatment of animals, and business practices. Metaethics explores the underlying assumptions and concepts of ethics. It asks whether there are objective moral facts, how moral knowledge is possible, and how moral judgments motivate people. Influential normative theories are consequentialism, deontology, and virtue ethics. According to consequentialists, an act is right if it leads to the best consequences. Deontologists focus on acts themselves, saying that they must adhere to duties, like telling the truth and keeping promises. Virtue ethics sees the manifestation of virtues, like courage and compassion, as the fundamental principle of morality.

Ethics is closely connected to value theory, which studies the nature and types of value, like the contrast between intrinsic and instrumental value. Moral psychology is a related empirical field and investigates psychological processes involved in morality, such as reasoning and the formation of character. Descriptive ethics describes the dominant moral codes and beliefs in different societies and considers their historical dimension.

The history of ethics started in the ancient period with the development of ethical principles and theories in ancient Egypt, India, China, and Greece. This period saw the emergence of ethical teachings associated with Hinduism, Buddhism, Confucianism, Daoism, and contributions of philosophers like Socrates and Aristotle. During the medieval period, ethical thought was strongly influenced by religious teachings. In the modern period, this focus shifted to a more secular approach concerned with moral experience, reasons for acting, and the consequences of actions. An influential development in the 20th century was the emergence of metaethics.

Overview adapted from Wikipedia (CC BY-SA 4.0; see the article history for authors).

In the original texts

Passages from public-domain books where Ethics is discussed.

Definition of Ethics. The term ethics is derived from a Greek word meaning manners, customs, habits, just as the term morals is derived from a Latin word with a similar meaning. This suggests the character of the science as an account of human action. Anthropology, ethnology, psychology, are also, in their way, accounts of human action.
John Dewey, Outlines of a Critical Theory of Ethics
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Ethics is traditionally a department of philosophy, and that is my reason for discussing it. I hardly think myself that it ought to be included in the domain of philosophy, but to prove this would take as long as to discuss the subject itself, and would be less interesting.
Bertrand Russell, Philosophy
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And though Mr. Sidgwick, in the quotation above made from him, implies that Ethics is concerned with man as he is, rather than with man as he should be; yet, in elsewhere speaking of Ethics as dealing with conduct as it should be, rather than with conduct as it is, he postulates ideal conduct and indirectly the ideal man. On his first page, speaking of Ethics along with Jurisprudence and Politics, he says that they…
Herbert Spencer, The Data of Ethics
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It is an enquiry to which most special attention should be directed; since this question, how ‘good’ is to be defined, is the most fundamental question in all Ethics. That which is meant by ‘good’ is, in fact, except its converse ‘bad,’ the _only_ simple object of thought which is peculiar to Ethics. Its definition is, therefore, the most essential point in the definition of Ethics; and moreover a mistake with…
G. E. Moore, Principia Ethica
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Accordingly, the supreme principle of jurisprudence is an analytical principle. On the contrary the principle of ethics goes beyond the notion of external freedom and, by general laws, connects further with it an end which it makes a duty. This principle, therefore, is synthetic. The possibility of it is contained in the Deduction (Sec. ix.).
Immanuel Kant, The Metaphysical Elements of Ethics
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Ethics

Overview

In the original texts

Philosophers who discussed Ethics

Related ideas

Opposing perspectives

Place in the tradition