- Also called:
- moral philosophy
- Key People:
- Socrates
- Aristotle
- Plato
- St. Augustine
- Immanuel Kant
Ancient civilizations to the end of the 19th century
The ancient Middle East and Asia
The first ethical precepts must have been passed down by word of mouth from parents and elders, but as societies learned to use the written word, they began to set down their ethical beliefs. These records constitute the first historical evidence of the origins of ethics.
The Middle East
The earliest surviving writings that might be taken as ethics textbooks are a series of lists of precepts to be learned by boys of the ruling class of Egypt, prepared some 3,000 years before the Christian Era. In most cases, they consist of shrewd advice on how to live happily, avoid unnecessary troubles, and advance one’s career by cultivating the favour of superiors. There are, however, several passages that recommend more broadly based ideals of conduct, such as the following: rulers should treat their people justly and judge impartially between their subjects; they should aim to make their people prosperous; those who have bread should share it with the hungry; humble and lowly people must be treated with kindness; one should not laugh at the blind or at dwarfs.
Why, then, should one follow these precepts? Did the ancient Egyptians believe that one should do what is good for its own sake? The precepts frequently state that it will profit a man to act justly, as in the maxim “Honesty is the best policy.” They also emphasize the importance of having a good name. These precepts were intended for the instruction of the ruling classes, however, and it is not clear why helping the destitute should have contributed to an individual’s good reputation among this class. To some degree, therefore, the authors of the precepts must have thought that to make people prosperous and happy and to be kind to those who have least is not merely personally advantageous but good in itself.
The precepts are not works of ethics in the philosophical sense. No attempt is made to find any underlying principles of conduct that might provide a more systematic understanding of ethics. Justice, for example, is given a prominent place, but there is no elaboration of the notion of justice or any discussion of how disagreements about what is just and unjust might be resolved. Furthermore, there is no probing of ethical dilemmas that may occur if the precepts should conflict with one another. The precepts are full of sound observations and practical wisdom, but they do not encourage theoretical speculation.
The same practical bent can be found in other early codes or lists of ethical injunctions. The great Code of Hammurabi is often said to have been based on the principle of “an eye for an eye, a tooth for a tooth,” as if this were some fundamental principle of justice, elaborated and applied to all cases. In fact, the code reflects no such consistent principle. It frequently prescribes the death penalty for offenses that do not themselves cause death—e.g., for robbery and for accepting bribes. Moreover, even the eye-for-an-eye rule applies only if the eye of the original victim is that of a member of the patrician class; if it is the eye of a commoner, the punishment is a fine of a quantity of silver. Apparently such differences in punishment were not thought to require justification. At any rate, there are no surviving attempts to defend the principles of justice on which the code was based.

The Hebrew people were at different times captives of both the Egyptians and the Babylonians. It is therefore not surprising that the law of ancient Israel, which was put into its definitive form during the Babylonian Exile, shows the influence both of the ancient Egyptian precepts and of the Code of Hammurabi. The book of Exodus refers, for example, to the principle of “life for life, eye for eye, tooth for tooth.” Hebraic law does not differentiate, as the Babylonian law does, between patricians and commoners, but it does stipulate that in several respects foreigners may be treated in ways that it is not permissible to treat fellow Hebrews; for instance, Hebrew slaves, but not others, had to be freed without ransom in the seventh year. Yet, in other respects Hebraic law and morality developed the humane concern shown in the Egyptian precepts for the poor and unfortunate: hired servants must be paid promptly, because they rely on their wages to satisfy their pressing needs; slaves must be allowed to rest on the seventh day; widows, orphans, and the blind and deaf must not be wronged; and the poor man should not be refused a loan. There was even a tithe providing for an incipient welfare state. The spirit of this humane concern was summed up by the injunction to “love thy neighbour as thyself,” a sweepingly generous form of the rule of reciprocity.
The famed Ten Commandments are thought to be a legacy of Semitic tribal law from a time when important commands were taught one for each finger, so that they could be remembered more easily (sets of five or 10 laws are common among preliterate civilizations). The content of the Hebrew commandments differed from other laws of the region mainly in its emphasis on duties to God. This emphasis persisted in the more detailed laws laid down elsewhere; as much as half of such legislation was concerned with crimes against God and ceremonial and ritualistic matters, though there may be other explanations for some of these ostensibly religious requirements concerning the avoidance of certain foods and the need for ceremonial cleansings.
In addition to lengthy statements of the law, the surviving literature of ancient Israel includes both proverbs and the books of the prophets. The proverbs, like the precepts of the Egyptians, are brief statements that do not demonstrate much concern for systematic presentation or overall coherence. They go farther than the Egyptian precepts, however, in urging conduct that is just and upright and pleasing to God. There are correspondingly fewer references to what is needed for a successful career, though it is frequently stated that God rewards the just. In this connection, the Book of Job is notable as an exploration of the problem raised for those who accept this motive for obeying the moral law: why do the best of people frequently suffer the worst misfortunes? The book offers no solution beyond faith in God, but the sharpened awareness of the problem it offers may have influenced some to adopt the belief in reward and punishment in another realm as the only possible solution.
The literature of the prophets contains a good deal of social and moral criticism, though most of it consists of denunciation rather than discussion about what goodness really is or why there should be so much wrongdoing. The Book of Isaiah is especially notable for its early portrayal of a utopia in which “the desert shall blossom as the rose…the wolf also shall dwell with the lamb.…They shall not hurt or destroy in all my holy mountain.”
India
Unlike the ethical teachings of ancient Egypt and Babylonia, Indian ethics was philosophical from the start. In the oldest of the Indian writings, the Vedas, ethics is an integral aspect of philosophical and religious speculation about the nature of reality. These writings date from about 1500 to 1200 bce. They have been described as the oldest philosophical literature in the world, and what they say about how people ought to live may therefore be the first philosophical ethics. (See Indian philosophy.)
The Vedas are, in a sense, hymns, but the gods to which they refer are not persons but manifestations of ultimate truth and reality. In the Vedic philosophy, the basic principle of the universe, the ultimate reality on which the cosmos exists, is the principle of rita, which is the word from which the Western notion of right is derived. There is thus a belief in a right moral order somehow built into the universe itself. Hence, truth and right are linked; to penetrate through illusion and understand the ultimate truth of human existence is to understand what is right. To be an enlightened person is to know what is real and to live rightly, for these are not two separate things but one and the same.
The ethics that is thus traced to the very essence of the universe is not without detailed practical applications. These applications were based on four ideals, or proper goals, of life: prosperity, the satisfaction of desires, moral duty, and spiritual perfection—i.e., liberation from a finite existence. From these ends follow certain virtues: honesty, rectitude, charity, nonviolence, modesty, and purity of heart. To be condemned, on the other hand, are falsehood, egoism, cruelty, adultery, theft, and injury to living things. Because the eternal moral law is part of the universe, to do what is praiseworthy is to act in harmony with the universe, and accordingly such action will receive its proper reward; conversely, once the true nature of the self is understood, it becomes apparent that those who do what is wrong are acting self-destructively.
These basic principles underwent considerable modification over the ensuing centuries, especially in the Upanishads, a body of philosophical literature dating from about the middle of the 1st millennium bce. The Indian caste system, with its intricate laws about what members of each caste may or may not do, is accepted by the Upanishads as part of the proper order of the universe. Ethics itself, however, is not regarded as a matter of conformity to laws. Instead, the desire to be ethical is an inner desire. It is part of the quest for spiritual perfection, which in turn is elevated to the highest of the four goals of life.
During the following centuries the moral philosophy of this early period gradually became a rigid and dogmatic system that provoked several reactions. One, which is uncharacteristic of Indian thought in general, was the Charvaka, or materialist school, which mocked religious ceremonies, saying that they were invented by the Brahmans (the priestly caste) to ensure their livelihood. When the Brahmans defended animal sacrifices by claiming that the sacrificed beast goes straight to heaven, the members of the Charvaka asked why the Brahmans did not kill their aged parents to hasten their arrival there. Against the postulation of an eventual spiritual liberation, Charvaka ethics urged each individual to seek his or her pleasure in the here and now.
Jainism, another reaction to the traditional Vedic outlook, reached exactly the opposite conclusions. The Jain philosophy is based on spiritual liberation as the highest of all goals and nonviolence as the means of attaining it. In true philosophical manner, the Jains found in the principle of nonviolence a guide to all morality. First, apart from the obvious application to prohibiting violent acts directed at other humans, nonviolence is extended to all living things. The Jains are vegetarian. They are often ridiculed by Westerners for the care they take to avoid injuring insects or other living things while walking or drinking water that may contain minute organisms; it is less well known that Jains began to care for sick and injured animals thousands of years before animal shelters were thought of in Europe. The Jains do not draw the distinction usually made in Western ethics between their responsibility for what they do and their responsibility for what they omit doing. Omitting to care for an injured animal would also be in their view a form of violence.
Other moral duties are also derived from the notion of nonviolence. To tell someone a lie, for example, is regarded as inflicting a mental injury on that person. Stealing, of course, is another form of injury, but because of the absence of a distinction between acts and omissions, even the possession of wealth is seen as depriving the poor and hungry of the means to satisfy their wants. Thus, nonviolence leads to a principle of nonpossession of property. Jain priests were expected to be strict ascetics and to avoid sexual intercourse. Ordinary Jains, however, followed a slightly less-severe code, which was intended to give effect to the major forms of nonviolence while still being compatible with a normal life.
The other great ethical system to develop as a reaction to the ossified form of the old Vedic philosophy was Buddhism. The person who became known as the Buddha (flourished c. 6th–4th century bce), which means the “enlightened one,” was born the son of a king. Until he was 29 years old, he lived the sheltered life of a typical prince, with every luxury he could desire. At that time, legend has it, he was jolted out of his idleness by the “Four Signs”: he saw in succession an old man, a sick person, a corpse being carried to cremation, and a monk in meditation beneath a tree. He began to think about old age, disease, and death, and decided to follow the way of the monk. For six years he led an ascetic life of renunciation, but finally, while meditating under a tree, he concluded that the solution was not withdrawal from the world, but rather a practical life of compassion for all.
Buddhism is conventionally regarded as a religion, and indeed over the centuries it adopted religious trappings in many places. This is an irony of history, however, because the Buddha himself was a strong critic of religion. He rejected the authority of the Vedas and refused to set up an alternative creed. He regarded religious ceremonies as a waste of time and theological beliefs as mere superstition. He refused to discuss abstract metaphysical problems such as the immortality of the soul. The Buddha told his followers to think for themselves and to take responsibility for their own future. In place of religious beliefs and religious ceremonies, the Buddha advocated a life devoted to universal compassion and brotherhood. Through such a life one might reach the ultimate goal, nirvana, a state in which all living things are free from pain and sorrow. There are similarities between this morality of universal compassion and the ethics of the Jains.
In keeping with his own previous experience, the Buddha proposed a “middle path” between self-indulgence and self-renunciation. In fact, it is not so much a path between these two extremes as one that draws together the benefits of both. Through living a life of compassion and love for all, a person achieves the liberation from selfish cravings sought by the ascetic and a serenity and satisfaction that are more fulfilling than anything obtained by indulgence in pleasure.
It is sometimes thought that because the Buddhist goal is nirvana, a state that can be reached by meditation, Buddhism teaches a withdrawal from the real world. Nirvana, however, is not to be sought for oneself alone; it is regarded as a unity of the individual self with the universal self in which all things take part. In the Mahayana school of Buddhism, the aspirant to enlightenment even takes a vow to become a bodhisattva (buddha-to-be) and not to accept final release until everything that exists in the universe has attained nirvana.
The Buddha lived and taught in India, and so Buddhism is properly classified as an Indian moral philosophy. Yet Buddhism did not permanently take hold in the land of its origin. Instead, it spread in different forms south into Sri Lanka and Southeast Asia and north through Tibet to China, Korea, and Japan. In the process, Buddhism suffered the same fate as the Vedic philosophy against which it had rebelled: it became a religion, often rigid, with its own sects, ceremonies, and superstitions.
China
The two greatest moral philosophers of ancient China, Laozi (flourished c. 6th century bce) and Confucius (Kongfuzi, or Kongzi; 551–479 bce), thought in very different ways. Laozi is best known for his ideas about the Dao (literally “Way,” the Supreme Principle). The Dao is based on the traditional Chinese virtues of simplicity and sincerity. To follow the Dao is a matter not of observing any set of duties or prohibitions but rather of living in a simple and honest manner, being true to oneself, and avoiding the distractions of ordinary living. Laozi’s classic book on the Dao, Daodejing, consists only of aphorisms and isolated paragraphs, making it difficult to draw an intelligible system of ethics from it. Perhaps this is because Laozi was a type of moral skeptic: he rejected both righteousness and benevolence, apparently because he saw them as imposed on individuals from without rather than coming from their own inner natures. Like the Buddha, Laozi found the things prized by the world—rank, luxury, and glamour—to be empty and worthless when compared with the ultimate value of a peaceful inner life. He also emphasized gentleness, calm, and nonviolence. Nearly 600 years before Jesus, he said: “It is the way of the Dao…to recompense injury with kindness.” By returning good for good and also good for evil, Laozi believed that all would become good; to return evil for evil would lead to chaos.
The lives of Laozi and Confucius overlapped, and there is even an account of a meeting between them, which is said to have left the younger Confucius baffled. Confucius was the more down-to-earth thinker, absorbed in the practical task of social reform. The province in which he served as minister of justice became renowned for the honesty of its people, the respect shown to the aged, and the care taken of the poor. Probably because of their practical nature, the teachings of Confucius had a far greater influence on China than did those of the more withdrawn Laozi.
Confucius did not organize his recommendations into any coherent system. His teachings are offered in the form of sayings, aphorisms, and anecdotes, usually in reply to questions by disciples. They aim at guiding the student toward becoming a junzi, a concept translated as “gentleman” or “superior man.” In opposition to the prevailing feudal ideal of the aristocratic lord, Confucius presented the superior man as one who is humane and thoughtful, motivated by the desire to do what is good rather than by personal profit. Beyond this, however, the concept is not discussed in any detail; it is only shown by diverse examples, some of them trite: “A superior man’s life leads upwards.…The superior man is broad and fair; the inferior man takes sides and is petty.…A superior man shapes the good in man; he does not shape the bad in him.”
One of the recorded sayings of Confucius is an answer to a request from a disciple for a single word that could serve as a guide to conduct for one’s entire life. He replied: “Is not reciprocity such a word? What you do not want done to yourself, do not do to others.” This rule is repeated several times in the Confucian literature and might be considered the supreme principle of Confucian ethics. Other duties are not, however, presented as derivative from this supreme principle, nor is the principle used to determine what should be done when two or more specific duties—e.g., the duty to parents and the duty to friends, both of which are prominent in Confucian ethics—conflict with each other.
Confucius did not explain why the superior man chooses righteousness rather than personal profit. This question was taken up more than 100 years after his death by his follower Mencius (Mengzi; c. 372–c. 289 bce), who asserted that humans are naturally inclined to do what is humane and right. Evil is not part of human nature but is the result of poor upbringing or lack of education. But Confucius also had another distinguished follower, Xunzi (c. 300–c. 230 bce), who said that humans naturally seek profit for themselves and envy others. The rules of morality are designed to avoid the strife that would otherwise follow from acting according to this nature. The Confucian school was united in its ideal of the junzi but divided over whether such an ideal was to be obtained by controlling people’s natural desires or allowing them to be fulfilled.
Ancient and Classical Greece
Ancient Greece
Ancient Greece was the birthplace of Western philosophical ethics. The ideas of Socrates (c. 470–399 bce), Plato, and Aristotle (384–322 bce) will be discussed in the next section. The sudden flowering of philosophy during that period was rooted in the ethical thought of earlier centuries. In the poetic literature of the 7th and 6th centuries bce, there were, as in other cultures, moral precepts but no real attempts to formulate a coherent overall ethical position. The Greeks were later to refer to the most prominent of these poets and early philosophers as the seven sages, and they are frequently quoted with respect by Plato and Aristotle. Knowledge of the thought of this period is limited, for often only fragments of original writings, along with later accounts of dubious accuracy, remain.
Pythagoras (c. 580–c. 500 bce), whose name is familiar because of the geometric theorem that bears his name, is one such early Greek thinker about whom little is known. He appears to have written nothing at all, but he was the founder of a school of thought that touched on all aspects of life and that may have been a kind of philosophical and religious order. In ancient times the school was best known for its advocacy of vegetarianism, which, like that of the Jains, was associated with the belief that after the death of the body, the human soul may take up residence in the body of an animal (see reincarnation). Pythagoreans continued to espouse this view for many centuries, and classical passages in the works of writers such as Ovid (43 bce–17 ce) and Porphyry (234–305) opposing bloodshed and animal slaughter can be traced to Pythagoras.
Ironically, an important stimulus for the development of moral philosophy came from a group of teachers to whom the later Greek philosophers—Socrates, Plato, and Aristotle—were consistently hostile: the Sophists. This term was used in the 5th century to refer to a class of professional teachers of rhetoric and argument. The Sophists promised their pupils success in political debate and increased influence in the affairs of the city. They were accused of being mercenaries who taught their students to win arguments by fair means or foul. Aristotle said that Protagoras (c. 490–c. 420 bce), perhaps the most famous of the Sophists, claimed to teach how “to make the weaker argument the stronger.”
The Sophists, however, were more than mere teachers of rhetorical tricks. They regarded themselves as imparters of the cultural and intellectual qualities necessary for success, and their involvement with argument about practical affairs naturally led them to develop views about ethics. The recurrent theme in the views of the better-known Sophists, such as Protagoras, Antiphon (c. 480–411 bce), and Thrasymachus (flourished late 5th century bce), is that what is commonly called good and bad or just and unjust does not reflect any objective fact of nature but is rather a matter of social convention. Protagoras is the apparent author of the celebrated epigram summing up this theme, “Man is the measure of all things.” Plato represents him as saying, “Whatever things seem just and fine to each city, are just and fine for that city, so long as it thinks them so.” Protagoras, like Herodotus, drew a moderate conclusion from his ethical relativism. He argued that, while the particular content of the moral rules may vary, there must be rules of some kind if life is to be tolerable. Thus, Protagoras stated that the foundations of an ethical system needed nothing from the gods or from any special metaphysical realm beyond the ordinary world of the senses.
Thrasymachus appears to have taken a more radical approach—if Plato’s portrayal of his views is historically accurate. He explained that the concept of justice means nothing more than obedience to the laws of society, and, since these laws are made by the strongest political group in its own interest, justice represents nothing but the interest of the stronger. This position is often represented by the slogan “Might makes right.” Thrasymachus was probably not saying, however, that whatever the mightiest do really is right; he is more likely to have been denying that the distinction between right and wrong has any objective basis. Presumably he would then encourage his pupils to follow their own interests as best they could. He is thus an early representative of moral skepticism and perhaps ethical egoism, the view that the right thing to do is to pursue one’s own interest (see below Ethical egoism).
It is not surprising that, with ideas of this sort in circulation, other thinkers should react by probing more deeply into ethics to see whether the potentially destructive conclusions of some of the Sophists could be resisted. This reaction produced works that have served ever since as the cornerstone of the entire edifice of Western ethics.