Contingency and chance Edwards uses as equivalent terms. In common use, contingency and chance are relative to our knowledge—implying that we discern no cause. In another use,—the use of a certain philosophical school,—he affirms that contingency is used to express absolutely no cause; or, that some events are represented as existing without any cause or ground of their existence. This will be examined in its proper place. I am now only stating Edwards’s opinions, not discussing them.
Sec. IV. Of the Distinction of natural and moral Necessary and Inability.
We now return to the question:—Is the connexion between motive and volition necessary?
The term necessary, in its common or vulgar use, does not relate to this question, for in that use as we have seen, it refers to the connexion between volition considered as a cause, and its effects. In this question, we are considering volition as an effect in relation to its cause or the motive. If the connexion then of motive and volition be necessary, it must be necessary in the philosophical or metaphysical sense of the term. Now this philosophical necessity Edwards does hold to characterize the connexion of motive and volition. This section opens with the following distinction of philosophical necessity: “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.” He then appropriates moral philosophical necessity to express the nature of the connexion between motive and volition: “And sometimes by moral necessity is meant that necessity of connexion and consequence which arises from 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.” (p. 32.) Natural philosophical necessity as distinguished from this, he employs to characterize the connexion between natural causes and phenomena of our being, as the connexion of external objects with our various sensations, and the connexion between truth and our assent or belief. (p. 33.)
In employing the term moral, however, he does not intend to intimate that it affects at all the absoluteness of the necessity which it distinguishes; on the contrary, he affirms that “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. It must be allowed that there may be such a thing as a sure and perfect connexion between moral causes and effects; so this only (i. e. the sure and perfect connexion,) is what I call by the name of moral necessity.” (p. 33.)
Nor does he intend “that when a moral habit or motive is so strong that the act of the will infallibly follows, this is not owing to the nature of things!” But these terms, moral and natural, are convenient to express a difference which really exists; a difference, however, which “does not lie so much in the nature of the connexion as in the two terms connected.” Indeed, he soon after admits “that choice in many cases arises from nature, as truly as other events.” His sentiment is plainly this choice lies in the great system and chain of nature as truly as any other phenomenon, arising from its antecedent and having its consequents or effects: but we have appropriated nature to express the chain of causes and effects, which lie without us, and which are most obvious to us; and choice being, “as it were, a new principle of motion and action,” lying within us, and often interrupting or altering the external course of nature, seems to demand a peculiar designation. (p. 34.)
Edwards closes his remarks on moral necessity by justifying his reduction of motive and volition under philosophical necessity. “It must be observed, that in what has been explained, as signified by the name of moral necessity, the word necessity is not used according to the original design and meaning of the word; for, as was observed before, such terms, necessary, impossible, irresistible, &c. in common speech, and their most proper sense, are always relative, having reference to some supposable voluntary opposition or endeavour, that is insufficient. But no such opposition, or contrary will and endeavour, is supposable in the case of moral necessity; which is a certainty of the inclination and will itself; which does not admit of the supposition of a will to oppose and resist it. For it is absurd to suppose the same individual will to oppose itself in its present act; or the present choice to be opposite to, and resisting present choice: as absurd as it is to talk of two contrary motions in the same moving body at the same time. And therefore the very case supposed never admits of any trial, whether an opposing or resisting will can overcome this necessity.” (p. 35.)
This passage is clear and full. Common necessity, or necessity in the original use of the word, refers to the connexion between volition and its effects; for here an opposition to will is supposable. I may choose or will to raise a weight; but the gravity opposed to my endeavour overcomes it, and I find it impossible for me to raise it, and the weight necessarily remains in its place. In this common use of these terms, the impossibility and the necessity are relative to my volition; but in the production of choice itself, or volition, or the sense of the most agreeable, there is no reference to voluntary endeavour. Choice is not the cause of itself: it cannot be conceived of as struggling with itself in its own production. The cause of volition does not lie within the sphere of volition itself; if any opposition, therefore, were made to the production of a volition, it could not be made by a volition. The mind, with given susceptibilities and habits, is supposed to be placed within the influence of objects and their circumstances, and the choice takes place in the correlation of the two, as the sense of the most agreeable. Now choice cannot exist before its cause, and so there can be no choice in the act of its causation. It comes into existence, therefore, by no necessity relating to voluntary endeavour; it comes into existence by a philosophical and absolute necessity of cause and effect. It is necessary as the falling of a stone which is thrown into the air; as the freezing or boiling of water at given temperatures; as sensations of sight, sound, smell, taste, and feeling, when the organs of sense and the objects of sense are brought together. The application of the epithet moral to the necessity of volition, evidently does not alter in the least the character of that necessity. It is still philosophical and absolute necessity, and as sure and perfect as natural necessity. This we have seen he expressly admits, (p. 33;) affirming, (p. 34,) that the difference between a moral and natural necessity is a mere difference in the “two terms connected,” and not a difference “in the nature of the connexion.”
Natural and moral inability.
“What has been said of natural and moral necessity, may serve to explain what is intended by natural and moral inability. We are said to be naturally unable to do a thing, when we cannot do it if we will, because what is most commonly called nature does not allow of it, or because of some impeding defect or obstacle that is extrinsic to the will; either in the faculty of the understanding, constitution of body, or external objects.” (p. 35.) We may make a voluntary endeavour to know something, and may find ourselves unable, through a defect of the understanding. We may make a voluntary effort to do something by the instrumentality of our hand, and may find ourselves unable through a defect of the bodily constitution; or external objects may be regarded as presenting such a counter force as to overcome the force we exert. This is natural inability; this is all we mean by it. It must be remarked too, that this is inability not metaphysically or philosophically considered, and therefore not absolute inability; but only inability in the common and vulgar acceptation of the term—a relative inability, relative to volition or choice—an inability to do, although we will to do.