By comparing its meanings in different connexions and observing what they have in common, we learn the essential meaning of a word; and the essential meaning of a word that is variously applied, may best be learnt by comparing with one another those applications of it which diverge most widely. Let us thus ascertain what good and bad mean. (§8 ¶1)

In which cases do we distinguish as good, a knife, a gun, a house? And what trait leads us to speak of a bad umbrella or a bad pair of boots? The characters here predicated by the words good and bad, are not intrinsic characters; for apart from human wants, such things have neither merits nor demerits. We call these articles good or bad according as they are well or ill adapted to achieve prescribed ends. The good knife is one which will cut; the good gun is one which carries far and true; the good house is one which duly yields the shelter, comfort, and accommodation sought for. Conversely, the badness alleged of the umbrella or the pair of boots, refers to their failures in fulfilling the ends of keeping off the rain and comfortably protecting the feet, with due regard to appearances. So is it when we pass from inanimate objects to inanimate actions. We call a day bad in which storms prevent us from satisfying certain of our desires. A good season is the expression used when the weather has favoured the production of valuable crops. If from lifeless things and actions we pass to living ones, we similarly find that these words in their current applications refer to efficient subservience. The goodness or badness of a pointer or a hunter, of a sheep or an ox, ignoring all other attributes of these creatures, refer in the one case to the fitness of their actions for effecting the ends men use them for, and in the other case to the qualities of their flesh as adapting it to support human life. And those doings of men which, morally considered, are indifferent, we class as good or bad according to their success or failure. A good jump is a jump which, remoter ends ignored, well achieves the immediate purpose of a jump; and a stroke at billiards is called good when the movements are skilfully adjusted to the requirements. Oppositely, the badness of a walk that is shuffling and an utterance that is indistinct, is alleged because of the relative non-adaptations of the acts to the ends. (§8 ¶2)

Thus recognizing the meanings of good and bad as otherwise used, we shall understand better their meanings as used in characterizing conduct under its ethical aspects. Here, too, observation shows that we apply them according as the adjustments of acts to ends are, or are not, efficient. This truth is somewhat disguised. The entanglement of social relations is such, that men’s actions often simultaneously affect the welfares of self, of offspring, and of fellow-citizens. Hence results confusion in judging of actions as good or bad; since actions well fitted to achieve ends of one order, may prevent ends of the other orders from being achieved. Nevertheless, when we disentangle the three orders of ends, and consider each separately, it becomes clear that the conduct which achieves each kind of end is regarded as relatively good; and is regarded as relatively bad if it fails to achieve it. (§8 ¶3)

Take first the primary set of adjustments—those subserving individual life. Apart from approval or disapproval of his ulterior aims, a man who fights is said to make a good defence, if his defence is well adapted for self-preservation; and, the judgments on other aspects of his conduct remaining the same, he brings down on himself an unfavourable verdict, in so far as his immediate acts are concerned, if these are futile. The goodness ascribed to a man of business, as such, is measured by the activity and ability with which he buys and sells to advantage; and may coexist with a hard treatment of dependents which is reprobated. Though in repeatedly lending money to a friend who sinks one loan after another, a man is doing that which, considered in itself is held praiseworthy; yet, if he does it to the extent of bringing on his own ruin, he is held blameworthy for a self-sacrifice carried too far. And thus is it with the opinions we express from hour to hour on those acts of people around which bear on their health and personal welfare. You should not have done that; is the reproof given to one who crosses the street amid a dangerous rush of vehicles. You ought to have changed your clothes; is said to another who has taken cold after getting wet. You were right to take a receipt; you were wrong to invest without advice; are common criticisms. All such approving and disapproving utterances make the tacit assertion that, other things equal, conduct is right or wrong according as its special acts, well or ill adjusted to special ends, do or do not further the general end of self-preservation. (§8 ¶4)

These ethical judgments we pass on self-regarding acts are ordinarily little emphasized; partly because the promptings of the self-regarding desires, generally strong enough, do not need moral enforcement, and partly because the promptings of the other-regarding desires, less strong, and often over-ridden, do need moral enforcement. Hence results a contrast. On turning to that second class of adjustments of acts to ends which subserve the rearing of offspring, we no longer find any obscurity in the application of the words good and bad to them, according as they are efficient or inefficient. The expressions good nursing and bad nursing, whether they refer to the supply of food, the quality and amount of clothing, or the due ministration to infantine wants from hour to hour, tacitly recognize as special ends which ought to be fulfilled, the furthering of the vital functions, with a view to the general end of continued life and growth. A mother is called good who, ministering to all the physical needs of her children, also adjusts her behaviour in ways conducive to their mental health; and a bad father is one who either does not provide the necessaries of life for his family, or otherwise acts in a manner injurious to their bodies or minds. Similarly of the education given to them, or provided for them. Goodness or badness is affirmed of it (often with little consistency, however) according as its methods are so adapted to physical and psychical requirements, as to further the children’s lives for the time being, while preparing them for carrying on complete and prolonged adult life. (§8 ¶5)

Most emphatic, however, are the applications of the words good and bad to conduct throughout that third division of it comprising the deeds by which men affect one another. In maintaining their own lives and fostering their offspring, men’s adjustments of acts to ends are so apt to hinder the kindred adjustments of other men, that insistance on the needful limitations has to be perpetual; and the mischiefs caused by men’s interferences with one another’s life-subserving actions are so great, that the interdicts have to be peremptory. Hence the fact that the words good and bad have come to be specially associated with acts which further the complete living of others and acts which obstruct their complete living. Goodness, standing by itself, suggests, above all other things, the conduct of one who aids the sick in re-acquiring normal vitality, assists the unfortunate to recover the means of maintaining themselves, defends those who are threatened with harm in person, property. or reputation, and aids whatever promises to improve the living of all his fellows. Contrariwise, badness brings to mind, as its leading correlative, the conduct of one who, in carrying on his own life, damages the lives of others by injuring their bodies, destroying their possessions, defrauding them, calumniating them. (§8 ¶6)

Always, then, acts are called good or bad, according as they are well or ill adjusted to ends; and whatever inconsistency there is in our uses of the words, arises from inconsistency of the ends. Here, however, the study of conduct in general, and of the evolution of conduct, have prepared us to harmonize these interpretations. The foregoing exposition shows that the conduct to which we apply the name good, is the relatively more evolved conduct; and that bad is the name we apply to conduct which is relatively less evolved. We saw that evolution, tending ever towards self-preservation, reaches its limit when individual life is the greatest, both in length and breadth; and now we see that, leaving other ends aside, we regard as good the conduct furthering self-preservation, and as bad the conduct tending to self-destruction. It was shown that along with increasing power of maintaining individual life, which evolution brings, there goes increasing power of perpetuating the species by fostering progeny, and that in this direction evolution reaches its limit when the needful number of young, preserved to maturity, are then fit for a life that is complete in fulness and duration; and here it turns out that parental conduct is called good or bad as it approaches or falls short of this ideal result. Lastly, we inferred that establishment of an associated state, both makes possible and requires a form of conduct such that life may be completed in each and in his offspring, not only without preventing completion of it in others, but with furtherance of it in others; and we have found above, that this is the form of conduct most emphatically termed good. Moreover, just as we there saw that evolution becomes the highest possible when the conduct simultaneously achieves the greatest totality of life in self, in offspring, and in fellow men; so here we see that the conduct called good rises to the conduct conceived as best, when it fulfils all three classes of ends at the same time. (§8 ¶7)