excepting those which were from eternity, could be necessary before the come to pass; and therefore the only way in which any effect or event, or any thing whatsoever that ever has had or will have a beginning, has come into being necessarily, or will hereafter necessarily exist. And therefore this is the Necessity which especially belongs to controversies about the acts of the will.
It may be of some use in these controversies, further to observe concerning metaphysical Necessity, that (agreeable to the distinction before observed of Necessity, as vulgarly understood) things that exist may be said to be necessary, either with a general or particular Necessity. The existence of a thing may be said to be necessary with a general Necessity, when, all things considered, there is a foundation for the certainty of their existence; or when in the most general and universal view of things, the subject and predicate of the proposition, which affirms its existence, would appear with an infallible connexion.
An event, or the existence of a thing, may be said to be necessary with a particular Necessity, when nothing that can be taken into consideration, in or about a person, thing, or time, alters the case at all, as to the certainty of an event, or the existence of a thing; or can be of any account at all, in determining the infallibility of the connexion of the subject and predicate in the proposition which affirms the existence of the thing; so that it is all one, as to that person, or thing, at least, at that time, as if the existence were necessary with a Necessity that is most universal and absolute. Thus there are many things that happen to particular persons, in the existence of which no will of theirs has any concern, at least, at that time; which, whether they are necessary or not, with regard to things in general, yet are necessary to them, and with regard to any volition of theirs at that time; as they prevent all acts of the will about the affair.—I shall have occasion to apply this observation to particular instances in the following discourse.—Whether the same things that are necessary with a particular Necessity, be not also necessary with a general Necessity, may be a matter of future consideration. Let that be as it will, it alters not the case, as to the use of this distinction of the kinds of Necessity.
These things may he sufficient for the explaining of the terms necessary and Necessity, as terms of art, and as often used by metaphysicians, and controversial writers in divinity, in a sense diverse from, and more extensive than, their original meaning, in common language, which was before explained.
What has been said to show the meaning of the terms necessary and necessity, may be sufficient for the explaining of the opposite terms, impossible and impossibility. For there is no difference, but only the latter are negative, and the former positive. Impossibility is the same as negative Necessity, or a Necessity that a thing should not be. And it is used as a term of art in a like diversity from the original and vulgar meaning, with Necessity.
The same may be observed concerning the words unable and Inability. It has been observed, that these terms, in their original and common use, have relation to will and endeavor, as supposable in the case, and as insufficient for the bringing to pass the thing willed and endeavored. But as these terms are often used by philosophers and divines, especially writers on controversies about Free Will, they are used in a quite different and far more extensive sense, and are applied to many cases wherein no will or endeavor for the bringing of the thing to pass is or can be supposed.
As the words necessary, impossible, unable, &c. are used by polemic writers, in a sense diverse from their common signification, the like has happened to the term contingent. Any thing is said to be contingent, or to come to pass by chance or accident, in the original meaning of such words, when its connexion with its causes or antecedents, according to the established course of things, is not discerned; and so is what we have no means of foreseeing. And especially is any thing said to be contingent, or accidental, with regard to us, when it comes to pass without our foreknowledge, and besides our design and scope.
But the word contingent is abundantly used in a very different sense; not for that whose connexion with the series of things we cannot discern, so as to foresee the event, but for something which has absolutely no previous ground or reason, with which its existence has any fixed and certain connexion.
Section 4.
Of The Distinction Of Natural And Moral Necessity, And Inability.
That Necessity which has been explained, consisting in an infallible connexion of the things signified by the subject and predicate of a proposition, as intelligent beings are the subjects of it, is distinguished into moral and natural Necessity.
I shall not now stand to inquire whether this distinction be a proper and perfect distinction; but shall only explain how these two sorts of Necessity are understood, as the terms are sometimes used, and as they are used in the following discourse.
The phrase, moral Necessity, is used variously: sometimes it is used for a Necessity of moral obligation. So we say, a man is under Necessity, when he is under bonds of duty and conscience, from which he cannot be discharged. Again, the word Necessity is often used for great obligation in point of interest. Sometimes by moral Necessity is meant that apparent connexion of things, which is the ground of moral evidence; and so is distinguished from absolute Necessity, or that sure connexion of things, that is a foundation for infallible certainty. In this sense, moral Necessity signifies much the same as that high degree of probability, which is ordinarily sufficient to satisfy mankind, in their conduct and behavior in the world, as they would consult their own safety and interest, and treat others properly as members of society. And sometimes by moral Necessity is meant that Necessity of connexion and consequence, which arises from such moral causes, as the strength of inclination, or motives, and the connexion which there is in many cases between these and such certain volitions and actions. And it is in this sense, that I use the phrase, moral necessity, in the following discourse.
By natural Necessity, as applied to men, I mean such Necessity as men are under through the force of natural causes; as distinguished from what are called moral causes, such as habits and dispositions of the heart, and moral motives and inducements. Thus men, placed in certain circumstances, are the subjects of particular sensations by Necessity: they feel pain when their bodies are wounded; they see the objects presented before them in a clear light, when their eyes are opened: so they assent to the truth of certain propositions, as soon as the terms are understood; as that two and two make four, that black is not white, that two parallel lines can never cross one another; so by a natural Necessity men’s bodies move downwards, when there is nothing to support them.
But here several things may be noted concerning these two kinds of Necessity.
1. Moral Necessity may be as absolute as natural Necessity. That is, the effect may be as perfectly connected with its moral cause, as a natural, necessary effect is with its natural cause. Whether the Will in every case is necessarily determined by the strongest motive, or whether the Will ever makes any resistance to such a motive, or can ever oppose the strongest present inclination, or not; if that matter should be controverted, yet I suppose none will deny, but that, in some cases, a previous bias and inclination, or the motive presented, may be so powerful, that the act of the will may be certainly and indissolubly connected therewith. When motives or previous bias are very strong, all will allow that there is some difficulty in going against them. And if they were yet stronger, the difficulty would be still greater. And therefore, if more were still added to their strength, to a certain degree, it would make the difficulty so great, that it would be wholly impossible to surmount it; for this plain reason, because whatever power men may be supposed to have to surmount difficulties, yet that power is not infinite; and so goes not beyond certain limits. If a man can surmount ten degrees of difficulty of this kind with twenty degrees of strength, because the degrees of strength are beyond the degrees of difficulty; yet if the difficulty be increased to thirty, or an hundred, or a thousand degrees, and his strength not