All cases of wilful action properly so called, of choice after hesitation and deliberation, may be conceived after one of these latter patterns. So you see that volition, in the narrower sense, takes place only when there are a number of conflicting systems of ideas, and depends on our having a complex field of consciousness. The interesting thing to note is the extreme delicacy of the inhibitive machinery. A strong and urgent motor idea in the focus may be neutralized and made inoperative by the presence of the very faintest contradictory idea in the margin. For instance, I hold out my forefinger, and with closed eyes try to realize as vividly as possible that I hold a revolver in my hand and am pulling the trigger. I can even now fairly feel my finger quivering with the tendency to contract; and, if it were hitched to a recording apparatus, it would certainly betray its state of tension by registering incipient movements. Yet it does not actually crook, and the movement of pulling the trigger is not performed. Why not?
Simply because, all concentrated though I am upon the idea of the movement, I nevertheless also realize the total conditions of the experiment, and in the back of my mind, so to speak, or in its fringe and margin, have the simultaneous idea that the movement is not to take place. The mere presence of that marginal intention, without effort, urgency, or emphasis, or any special reinforcement from my attention, suffices to the inhibitive effect.
And this is why so few of the ideas that flit through our minds do, in point of fact, produce their motor consequences. Life would be a curse and a care for us if every fleeting fancy were to do so. Abstractly, the law of ideo-motor action is true; but in the concrete our fields of consciousness are always so complex that the inhibiting margin keeps the centre inoperative most of the time. In all this, you see, I speak as if ideas by their mere presence or absence determined behavior, and as if between the ideas themselves on the one hand and the conduct on the other there were no room for any third intermediate principle of activity, like that called 'the will.'
If you are struck by the materialistic or fatalistic doctrines which seem to follow this conception, I beg you to suspend your judgment for a moment, as I shall soon have something more to say about the matter. But, meanwhile yielding one's self to the mechanical conception of the psychophysical organism, nothing is easier than to indulge in a picture of the fatalistic character of human life. Man's conduct appears as the mere resultant of all his various impulsions and inhibitions. One object, by its presence, makes us act: another object checks our action. Feelings aroused and ideas suggested by objects sway us one way and another: emotions complicate the game by their mutual inhibitive effects, the higher abolishing the lower or perhaps being itself swept away. The life in all this becomes prudential and moral; but the psychologic agents in the drama may be described, you see, as nothing but the 'ideas' themselves,—ideas for the whole system of which what we call the 'soul' or character' or 'will' of the person is nothing but a collective name. As Hume said, the ideas are themselves the actors, the stage, the theatre, the spectators, and the play. This is the so-called 'associationist' psychology, brought down to its radical expression: it is useless to ignore its power as a conception. Like all conceptions, when they become clear and lively enough, this conception has a strong tendency to impose itself upon belief; and psychologists trained on biological lines usually adopt it as the last word of science on the subject. No one can have an adequate notion of modern psychological theory unless he has at some time apprehended this view in the full force of its simplicity.
Let us humor it for a while, for it has advantages in the way of exposition.
Voluntary action, then, is at all times a resultant of the compounding of our impulsions with our inhibitions.
From this it immediately follows that there will be two types of will, in one of which impulsions will predominate, in the other inhibitions. We may speak of them, if you like, as the precipitate and the obstructed will, respectively. When fully pronounced, they are familiar to everybody. The extreme example of the precipitate will is the maniac: his ideas discharge into action so rapidly, his associative processes are so extravagantly lively, that inhibitions have no time to arrive, and he says and does whatever pops into his head without a moment of hesitation.
Certain melancholiacs furnish the extreme example of the over-inhibited type. Their minds are cramped in a fixed emotion of fear or helplessness, their ideas confined to the one thought that for them life is impossible. So they show a condition of perfect 'abulia,' or inability to will or act. They cannot change their posture or speech or execute the simplest command.
The different races of men show different temperaments in this regard. The Southern races are commonly accounted the more impulsive and precipitate: the English race, especially our New England branch of it, is supposed to be all sicklied over with repressive forms of self-consciousness, and condemned to express itself through a jungle of scruples and checks.
The highest form of character, however, abstractly considered, must be full of scruples and inhibitions. But action, in such a character, far from being paralyzed, will succeed in energetically keeping on its way, sometimes overpowering the resistances, sometimes steering along the line where they lie thinnest.