Before proceeding to give an outline of the usual arguments in support of this doctrine, it is important to state the meaning of the words employed. No one in the least conversant with discussions of this nature can have failed to remark how much difficulty arises from the ambiguity of the terms employed, and how often men appear to differ in doctrine, when in fact they only differ in language.
The Will.
First, the word will itself is one of those ambiguous terms. Ii is sometimes used in a wide sense, so as to include all the desires, affections, and even emotions. It has this comprehensive sense when all the faculties of the soul are said to be included under the two categories of understanding and will. Everything, therefore, pertaining to the soul, that does not belong to the former, is said to belong to the latter. All liking and disliking, all preferring, all inclination and disinclination, are in this sense acts of the will. At other times, the word is used for the power of self-determination, or for that faculty by which we decide on our acts. In this sense only purposes and imperative volitions are acts of the will. It is obvious that if a writer affirms the liberty of the will in the latter sense, and his reader takes the word in the former, the one can never understand the other. Or if the same writer sometimes uses the word in its wide and sometimes in its narrow sense, he will inevitably mislead himself and others. To say that we have power over our volitions, and to say that we have power over our desires are entirely different things. One of these propositions may be affirmed and the other denied; but if will and desire are confounded the distinction between these propositions is obliterated. It has often been remarked that the confusion of these two meanings of the word will is the great defect of President Edwards’s celebrated work. He starts with a definition of the term, which makes it include all preferring, choosing, being pleased or displeased with, liking and disliking, and advocates a theory which is true, and applicable only to the will in the restricted sense of the word.
Motive.
Secondly, The word motive is often taken in different senses. It is defined to be anything which has a tendency to move the mind. Any object adapted to awaken desire or affection; any truth or conception which is suited to influence a rational and sensitive being to a decision, is said to be a motive. This is what is called the objective sense of the word. In this sense it is very far from being true that the will is always determined by the strongest motive. The most important truths, the most weighty considerations, the most alluring objects, are often powerless, so far as the internal state of the mind is concerned. The word, however, is often used in a subjective sense, for those inward convictions, feelings, inclinations, and principles which are in the mind itself, and which impel or influence the man to decide one way rather than another. It is only in this sense of the term that the will is determined by the strongest motive. But even then it must be admitted, as before remarked, that we have no criterion or standard by which to determine the relative strength of motives, other than their actual effect. So that to say that the will is determined by the strongest motive, only means that it is not self-determined, but that in every rational volition the man is influenced to decide one way rather than another, by something within him, so that the volition is a revelation of what he himself is.
Cause.
Thirdly, The word cause is no less ambiguous. It sometimes means the mere occasion; sometimes the instrument by which something is accomplished; sometimes the efficiency to which the effect is due; sometimes the end for which a thing is done, as when we speak of final causes; sometimes the ground or reason why the effect or action of the efficient cause is so rather than otherwise. To say that motives are the occasional causes of volition, is consistent with any theory of agency, whether of necessity or indifference; to say that they are efficient causes, is to transfer the efficiency of the agent to the motives; but to say that they are the ground or reason why the volitions are what they are, is only to say that every rational being, in every voluntary act, must have a reason, good or bad, for acting as he does. Most of the arguments against the statement that motives are the cause of volitions, are founded on the assumption that they are affirmed to be producing causes, and that it is intended to deny that the agent is the efficient cause of his own acts; whereas, the meaning simply is that motives are the reasons which determine the agent to assert his efficiency in one way rather than another. They are, however, truly causes, in so far as they determine the effect to be thus, and not otherwise. Parental love may induce a mother to watch by a sick child, and in this sense is the cause of her devotion, but she is none the less the efficient cause of all her acts of tenderness. Reid says, “either the man is the cause of the action. and then it is a free action, and is justly imputed to him, or it must have another cause, and cannot justly be imputed to the man.”1 This supposes that the word cause has but one sense. In the case just supposed, the mother is the efficient, her love the rational cause or reason of her acts. Is it a denial of her free agency to say that her love determined her will in favour of attention instead of neglect?