In meta-ethics, in the past most scholars have held that the term “good” has an objective factual basis. Moral realists include ethical monotheists, who see the term good referring to God and God’s commands, as well as ethical naturalists, who see the term good referring to some quality that can be observed, and ethical non-naturalists, who see the term good referring to a rational intuition. On the other hand, since the early part of the 20^th Century moral non-realism has come to dominate.  For example, non-realists like AJ Ayer and JL Mackie argue that the term “good” has no objective factual basis because it does not refer to a verifiable point of reference but rather expresses subjective feelings and emotions.  Overall, today the claim that the term “good” has an objective factual basis is not persuasive.

Firstly, ethical monotheists claim that the term “good” has an objective factual basis in God and God’s commands.  The Bible claims that “only God is truly good” Mark 10:18 and this is supported by both Classical Theism and Theistic Personalism, which have in different ways established that God is the omnibenevolent creator and the source of goodness in human actions. Further, at least for Protestant Christians, faith is Sola Scriptura and the Bible is a comprehensive moral guide, which suggests that what is good depends on God’s commands, which can be checked against the Bible, objectively.  Nevertheless, ethical monotheism is not credible.  Plato’s Euthyphro Dilemma shows that if God is the source of moral standards, as ethical monotheism suggests, then God cannot be good but is an arbitrary tyrant.  On the other hand, if in fact there are objective moral standards that God follows, he can be good but is not the origin of goodness as ethical monotheists suggest, and neither is He all-powerful.  Bertrand Russell found the Euthyphro Dilemma so persuasive that he used it as the basis for a disproof of God. Further, centuries of Church history demonstrate the problems with the ethical monotheist claim that the term “good” has an objective factual basis, when Christians so rarely agree on what it is or involves. Biblical Criticism shows that God’s commandments are not clear from the Bible, existing in different sometimes contradictory lists, being obviously influenced by the contexts of the biblical authors and being wide open to interpretation.  For example, the ten commandments are detailed in Exodus 20 and Exodus 34 and again in Deuteronomy 5.  The versions are phrased and organized differently, and the order of the coveting commandments is different between Exodus 20 and Deuteronomy 5.  Further, Jesus said that the two greatest commandments were love God and love of neighbour in Mark 12 and also that love was the only commandment in John 13.  Which commandments should a Christian follow and with what priority?  Further, the Commandments have always been interpreted differently by different Christians.  For example, Catholics and Lutherans combine the first two commandments, “no other gods” and “no graven images” while other Protestant Christians separate the first two commandments, making “no graven images” a separate commandment and leading to radically different attitudes to art and architecture even within Protestantism.  These examples show how ethical monotheism and its claim that the term “good” has an objective factual basis is not credible.

Secondly, ethical naturalists claim that the term “good” has an objective factual basis which can be observed.  For example, the utilitarian Jeremy Bentham argued that “nature has placed mankind under two sovereign masters; the pursuit of pleasure and the avoidance of pain”, reasoning that “good” refers to actions which produce the maximum amount of pleasure, which can be observed and measured using the seven criteria of extent, duration, intensity, certainty, propinquity, purity and fecundity, as well as the minimum amount of pain.  However, ethical naturalism is undermined by the is-ought gap, which Hume explained thus “in every system of morality, which I have hitherto met with, I have always remarked, that the author proceeds for some time in the ordinary way of reasoning, and establishes the being of a God, or makes observations concerning human affairs; when of a sudden I am surprised to find, that instead of the usual copulations of propositions, is, and is not, I meet with no proposition that is not connected with an ought, or an ought not. This change is imperceptible; but is, however, of the last consequence. For as this ought, or ought not, expresses some new relation or affirmation, it’s necessary that it should be observed and explained; and while a reason should be given, for what seems altogether inconceivable, how this new relation can be a deduction from others, which are entirely different from it.”  Hume’s point was that we can observe nature and what is, but we can’t observe any basis for ought claims at all.  Ethical naturalism is based on assertion and not argument and has no observable factual basis for what it claims to be good. Further and despite being a moral realist and thinking that the term “good” has an objective factual basis, G.E Moore claimed that ethical naturalism relies on the “naturalistic fallacy”, the incorrect assumption that something is good because it occurs in nature or is considered normal in society.  For Moore, just because something is natural or normal does not make it good.  For example, misogyny and sexual violence have been endemic through history and still are across the world today… this does not make these good or right.  This shows that the claim that the term good has an objective factual basis cannot b supported through ethical naturalism either.

On the other hand, G.E Moore and other ethical non-naturalists have conceded that what is good depends neither on the commands of God nor on anything that can be observed in nature.  Instead, drawing on Plato, they have argued that we know what is good as a rational intuition.  This explains why people find some actions which go against laws and don’t maximise happiness are good… such as a soldier disobeying orders and getting himself killed while trying to save a comrade.  Nevertheless, ethical non-naturalism is no more persuasive a basis for the claim that the term “good” has an objective factual basis than ethical monotheism or ethical naturalism.  The claim that we all know what goodness is as a rational intuition ignores the fact that people have widely different concepts of what is good.  Actions like that of the soldier are controversial… yes, some people would see him as a hero and say that his actions were “good” despite breaking the rules and compounding suffering… but many would reject this and argue that he should have obeyed orders and lived. Further, AJ Ayer was right to point out that claims about good, bad, right and wrong are better seen as expressions of subjective feelings and emotions, having no objective factual basis, than as having an objective basis in a rational intuition that we can’t observe or prove. Ayer’s argument develops that of Hume, that while we can observe what is, claims about what we ought to do are pure assertion and not verifiable.  Further, JL Mackie later agreed with Ayer, pointing out that ethical claims are based on an error and that moral judgments in fact “reflect adherence to and participation in different ways of life.”  Here Mackie was influenced by Wittgenstein, who had cast doubt on the ability of any term to have an “objective factual basis” arguing that meaning in language comes from usage and not reference so that it is not objective or factual. All these points suggest that ethical non-naturalism fails to provide any better defence of the claim that terms like “good” have an objective factual basis than ethical monotheism and ethical naturalism and that in fact ethical non-realism is more persuasive in its suggestion that terms like “good” have only a subjective basis.

In conclusion, the term “good” has no objective factual basis but is rather subjective and best understood as an expression of personal or communal feelings and emotions.  Today, ethical realism lacks credibility, so attention should be focused on refining ethical non-realism to provide the best possible explanation for how and why people use ethical language.