Having thus defined and distinguished goodness and virtue, he observes, that “the affections or passions which must govern the animal, are either, 1. The natural affections which lead to the good of the public. 2. Or the self-affections which lead to the good of the private. 3. Or such, as neither of these, not tending to any good of the public or private; but contrariwise: and which may therefore be justly stiled unnatural affections.
“So that according as these affections stand, a creature must be either virtuous or vicious, good or ill; the later sort of these affections, ’tis evident, are wholly vicious; the two former may be vicious or virtuous according to their degree.<149>
“It may seem strange, says our author, to speak of natural affections as too strong, or of self-affections as too weak: but to clear this difficulty, we must call to mind, that natural affection may in particular cases be excessive, and in an unnatural degree; as when pity is so overcoming as to destroy its own end, and prevent the succour and relief required: or as when love to the offspring proves such fondness as destroys the parent, and consequently the off spring itself. And, notwithstanding, it may seem harsh to call that unnatural and vicious, which is only an extream of some natural and kind affection; yet it is most certain, that whenever any single good affection of this sort is over great, it must be injurious to the rest, and detract in some measure from their force and natural operation.”56 This he illustrates at great length. “But having shewn what is meant by passions being too high or in too low a degree, and that to have any natural affection too high, and any self-affection too low, tho’ it be often approved as virtue, is yet strictly speaking a vice and imperfection; he now comes to the plainer and more essential part of vice, and which alone deserves to be considered as such, that is to say. 1. When either the public affections are weak and deficient. 2. Or the private and self-affections too strong. 3. Or that such affections arise, as are neither of these, nor in any degree tending to the support either of the public or private system.
“Otherwise than this, it is impossible any creature can be such as we call ill or vicious. So that if once we prove that ’tis not the creature’s interest to be thus viciously affected, but contrariwise; we shall then have proved, that it is his interest to be wholly good and virtuous in his action and behaviour: our business therefore, says he, will be to prove,
“1. That to have the natural, kindly or generous affections strong and powerful towards the good of the public, is to have the chief means and power of<150> self-enjoyment, and that to want them is certain misery and ill. 2. That to have the private or self-affections too strong, or beyond that degree of subordinacy to the kindly and natural, is also miserable. 3. And that to have the unnatural affections, (viz. such as are neither founded on the interest of the kind or public, nor of the private person or creature himself) is to be miserable in the highest degree.”57
Now all these points he has clearly proved, in the way of moral arithmetic, by a full examination of all our affections, private or public, and their effects and consequences. Whence he concludes, that virtue is the good, and vice the ill of every one by our natural constitution. But for his arguments, I must refer the reader to himself. I have only taken notice of his way of proceeding, to shew by this example how enquiries into the human mind ought to be carried on.
Another train of reasoning to prove that virtue is private interest.
That virtue is the natural good, and vice the natural evil of every one, has been evinced by several different ways of reasoning. And I think the few following propositions, which are universally owned to be true, not only amount to a full proof of it, but likewise shew that the truth is universally received and admitted.
1. It will not be disputed, that wherever the natures and connexions of pleasures and pains are fixed, there must be real differences with regard to greater and less; this must hold true in every case, as necessarily as in any one case. If therefore the natures and proportions of moral objects are fixed and determinate things, there must necessarily be in the nature of things with regard to them, as well as any other kinds of quantity, a truth and falshood of the case, a true and a false account or estimation. And therefore with respect to them, it must be our business to attain to as full a knowledge of their true values as we can, in order to make a just judgment or estimation of them. This is prudence: and prudence necessarily<151> supposes wherever it can take place, the natures or moments of things to be ascertainable. 2. But such prudence with regard to our moral conduct we can attain to; for, notwithstanding all the diversity there is among mankind in constitution, and consequently in sensibility with respect to sentiments, affections, passions, desires, uneasinesses, and, in one word, sensations of whatever kind, inward or outward; yet there is obviously such a conformity in feeling, and sentiment amongst mankind,a that it is unanimously agreed, that there is not only a real satisfaction in every exercise of social and kindly affections, but a pleasure which never cloys or ends in disgust, and which is, in that respect, superior to all the enjoyments of meer sense. And, on the other hand, the unnatural passions, such as hatred, envy, malice, misanthropy, or utter aversion to society, are allowed with universal consent, to produce compleat misery, where they are habitual and wrought into temper. But, 3. If that be true, then every step in the nature of things towards the establishment of bad and unsocial temper, must be a step toward the introduction of compleat misery into the mind; and contrariwise, every indulgence of social affection,<152> every virtuous exercise, must be an advancement toward fixing and settling that benign, generous, good temper, which is compleat joy, chearfulness and self-contentment; and therefore is commonly called the happy temper. Where there is an absolute degeneracy, a total apostacy from all candor, equity, trust, sociableness, or friendship, there are none who do not see and acknowledge the misery which is consequent: but the calamity must of necessity hold proportion with the corruption of the temper. It is impossible that it can be compleat misery, to be absolutely immoral and inhuman, and yet be no misery or ill at all to be so in any however little degree. But, besides, it is beyond all controversy, that habitudes are formed by repeated acts. Every indulgence therefore to any passion, has a tendency to fix and settle it in the mind, or to form it into temper and habit. And thus, tho’ there were no considerable ill in any one exercise of immoral affection; yet it must be contrary to interest, as it necessarily tends in consequence of the structure of our minds, that is, the dependence of our affections, to bring on the habitual temper; which is owned to be compleat misery: so far therefore our prudent part is easily descernible. Now, 4. With respect to all outward conveniencies and advantages, by the unanimous consent of all mankind, temperance is allowed universally, not only to be the best preservative of health, without which there can be no enjoyment; but to be necessary, to be able to relish pleasures in the highest degree; to be sauce to them, if one may use that vulgar phrase. And honesty is likewise owned to be the best policy: or the safest, the securest way of living and acting in society; nay, indeed the only way of securing to ourselves any solid or durable happiness. But these two truths being owned, they together with the foregoing propositions prove, “That, by the unanimous consent of mankind, founded upon universal experience, it is prudent to<153> be virtuous, and foolish to be vicious; or that virtue is the private good of every one, in all views, whether with respect to temper of mind, or outward security and advantage.” Indeed such is the universal agreement among mankind with respect to the good consequences of virtuous behaviour, and the bad ones of every vice, that there is no country in which at all times the chief virtues have not been recommended from the advantages naturally redounding from them; and, on the other hand, almost all vices are condemned on account of the disadvantages naturally resulting from them, by familiar proverbs in every one’s mouth? This we shall find to be true, if we but look into the collections of proverbs of different nations. For where, for instance, or in what nation however barbarous, is not cunning distinguished from true prudence; and are not temperance, honesty, faithfulness and generosity or benevolence, strongly inculcated by some very expressive apothegm? Nor can it indeed be otherwise, so plain and evident are the good effects of virtue, and the bad consequences of vice; and so clearly distinguishable is virtue in every case from its contrary.