You are in error, says the necessitarian to his opponents, in denying that motive, and in affirming that mind, is the efficient cause of volition. For if an act of the mind, or a volition, is caused by the mind, it must be produced by a preceding act of the mind, and this act must be produced by another preceding act of the mind, and so on ad infinitum; which reduces the matter to a plain impossibility. Now, if the necessitarian has not been deceived by an unwarrantable ambiguity on the part of his adversary, he has clearly reduced his doctrine to the absurdity of an infinite series of acts: that is to say, if the advocate of free-agency does not depart from the ordinary meaning of words, when he affirms that mind is the efficient cause of volition; and if he does not use these terms “efficient cause,” in different senses in the same sentence, then we feel bound to say that he is fairly caught in the toils of his adversary. But we are not yet in condition to pass a final judgment between the parties.

The necessitarian contends that “volition, or an act of the mind, is the effect of motive, and that it is subject to the power and action of its cause.”[126] The advocate of free-will replies, If we must suppose an action of motive on the mind to account for its act, we must likewise suppose another action to account for the action of motive; and so on ad infinitum. Thus the necessitarian seems to be fairly caught in his own toils, and entrapped by his own definition and arguments.

Our decision (for the correctness of which we appeal to the calm and impartial judgment of the reader) is as follows: If the term cause be understood in the first or the second sense above mentioned, there is no disagreement between the contending parties; and if it be understood in the third sense, then both parties are in error. If, in order to account for an act of the mind, we suppose it is caused by an action of motive, we are involved in the absurdity of an infinite series of actions; and on the other hand, if we suppose it is caused by a preceding act of the mind itself, we are forced into the same absurdity. Hence, we conclude, that an act of the mind, or a volition, is not produced by the action of either mind or motive, but takes its rise in the world without any such efficient cause of its existence.

Each party has refuted his adversary, and in the enjoyment of his triumph he seems not to have duly reflected on the destruction of his own position. Both are in the right, and both are in the wrong; but, as we shall hereafter see, not equally so. If we adopt the argument of both sides, in so far as it is true, we shall come to the conclusion that action must take its rise somewhere in the universe without being caused by preceding action. And if so, where shall we look for its origin? in that which by nature is endowed with active power, or in that which is purely and altogether passive?

We lay it down, then, as an established and fundamental position, that the mind acts or puts forth its volitions without being efficiently caused to do so—without being impelled by its own prior action, or by the prior action of anything else. The conditions or occasions of volition being supplied, the mind itself acts in view thereof, without being subject to the power or action of any cause whatever. All rational beings must, as we have seen, either admit this exemption of the mind in willing from the power and action of any cause, or else lose themselves in the labyrinth of an infinite series of causes. It is this exemption which constitutes the freedom of the human soul.

We are now prepared to see, in a clear light, the sophistical nature of the pretended demonstration of the scheme of necessity. “It is impossible to consider occurrences,” says Sir James Mackintosh, otherwise than as bound together in “the relation of cause and effect.” Now this relation, if we interpret it according to the nature of things, and not according to the sound of words, is not one, but two.

The motions of the body are caused by the mind, that is, they are produced by the action of the mind; this constitutes one relation: but acts of the mind are caused, that is, they are produced by the action of nothing; and this is a quite different relation. In other words, the motions of body are produced by preceding action, and the acts of the mind are not produced by preceding action. Hence, the first are necessitated, and the last are free: the first come under “the relation of cause and effect,” and the last come under a very different relation. The relation of cause and effect connects the most remote consequences of volition with volition itself; but when we reach volition [pg 154] there a new relation arises: it is the relation which subsists between an agent and its act. We may trace changes in the external world up to the volitions or acts of mind, and perceive no diversity in the chain of dependencies; but precisely at this point the chain of cause and effect ceases, and agency begins. The surrounding circumstances may be conditions, may be occasional causes, may be predisposing causes, but they are not, and cannot be, producing or efficient causes. Here, then, the iron chain terminates, and freedom commences. In the ambiguity which fails to distinguish between “the relation of cause and effect,” and the relation which volition bears to its antecedents, “consists the strength of the necessitarian system.” Let this distinction be clearly made and firmly borne in mind, and the great boasted adamantine scheme of necessity will resolve itself into an empty, ineffectual sound.

Hence, if we would place the doctrine of liberty upon solid grounds, it becomes necessary to modify the categories of M. Cousin. All things, says he, fall under the one or the other of the two following relations: the relation between subject and attribute, or the relation between cause and effect. This last category, we think, should be subdivided, so as to give two relations; one between cause and effect, properly so called, and the other between agent and action. Until this be done, it will be impossible to extricate the phenomena of the will from the mechanism of cause and effect.

We think we might here leave the stupendous sophism of the necessitarian; but as it has exerted so wonderful an influence over the human mind, and obscured, for ages, the glory of the moral government of God, we may well be permitted to pursue it further, and to continue the pursuit so long as a fragment or a shadow of it remains to be demolished.