2. Edwards has confounded the phenomena of the Will with those of the Sensibility which are necessary in the sense here defined. He must, therefore, hold that the characteristics of the latter class belong to those of the former.
3. Edwards represents the relation between motives and acts of Will, as being the same in kind as that which exists between causes and effects among external material substances. The former relation he designates by the words moral necessity; the latter, by that of natural, or philosophical, or physical necessity. Yet he says himself, that the difference expressed by these words “does not lie so much in the nature of the connection as in the two terms connected.” The qualifying terms used, then, designate merely the nature of the antecedents and consequents, while the nature of the connection between them is, in all instances, the same, that of naked necessity.
4. Edwards himself represents moral necessity as just as absolute as physical, or natural necessity. “Moral necessity may be,” he says, “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.”
5. Necessitarians represent the relation between motives and acts of Will as that of cause and effect; and for this reason necessary. “If,” says Edwards, “every act of Will is excited by some motive, then that motive is the cause of that act of Will.” “And if volitions are properly the effects of their motives, then they are necessarily connected with their motives.” Now as the relation of cause and effect is necessary, in the sense of the term Necessity as above defined, Edwards must hold, and design to teach, that all acts of Will are necessary in this sense.
6. Necessitarians represent the connection between motives and acts of Will as being, in all instances, the same in kind as that which exists between volitions and external actions. “As external actions,” says President Day, “are directed by the Will, so the Will itself is directed by influence.” Now all admit, that the connection between volitions and external actions is necessary in this sense, that when we will such action it cannot but take place. No other act is, in the circumstances, possible. In the same sense, according to Necessitarians, is every act of Will necessarily connected with influence, or motives. We do Necessitarians no wrong, therefore, when we impute to them the doctrine of Necessity as here defined. In all cases of sin, they hold, that an individual is in circumstances in which none but sinful acts of Will are possible, and these he cannot but put forth; and that in these identical circumstances the sinner is under obligation infinite to put forth different and opposite acts.
[THE TERM, CERTAINTY, AS USED BY NECESSITARIANS.]
II. We are prepared for another important inquiry, to wit: whether the words, certainty, moral certainty, &c., as used by Necessitarians, are identical in their meaning with that of Necessity as above defined? The doctrine of Necessity would never be received by the public at all, but for the language in which it is clothed, language which prevents the public seeing it as it is. At one time it is called Moral, in distinction from Natural Necessity. At another, it is said to be nothing but Certainty, or moral Certainty, &c. Now the question arises, what is this Certainty? Is it or is it not, real Necessity, and nothing else? That it is, I argue,
1. From the fact, as shown above, that there can possibly be no Certainty, which does not fall either under the relation of Liberty or Necessity as above defined. The Certainty of Necessitarians does not, according to their own showing, fall under the former relation: it must, therefore, fall under the latter. It must be naked Necessity, and nothing else.
2. While they have defined the term Necessity, and have not that of Certainty, they use the latter term as avowedly synonymous with the former. The latter, therefore, must be explained by the former, and not the former by the latter.
3. The Certainty which they hold is a certainty which avowedly excludes the possibility of different and opposite acts of Will under the influences, or motives, under which particular acts are put forth. The Certainty under consideration, therefore, is not necessity of a particular kind, a necessity consistent with liberty and moral obligation. It is the Necessity above defined, in all its naked deformity.