The person (it is known what I mean by the expression) prescribes the movements of the body, either through the will, when he desires to realize in the world of sense an effect of which he has proposed the idea, and in that case the movements are said to be voluntary or intentional; or, on the other hand, they take place without its will taking any part in it--in virtue of a fatal law of the organism--but on the occasion of a sentiment, in the latter case, I say that the movements are sympathetic. The sympathetic movement, though it may be involuntary and provoked by a sentiment, ought not to be confounded with those purely instinctive movements that proceed from physical sensibility. Physical instinct is not a free agent, and that which it executes is not an act of the person; I understand then here exclusively, by sympathetic movements, those which accompany a sentiment, a disposition of the moral order. The question that now presents itself is this: Of these two kinds of movement, having their principle in the person, which is capable of grace? That which we are rigorously forced to distinguish in philosophic analysis is not always separated also in the real. Thus it is rare that we meet intentional movements without sympathetic movements, because the will determines the intentional movements only after being decided itself by the moral sentiments which are the principle of the sympathetic movements. When a person speaks, we see his looks, his lineaments, his hands, often the whole person all together speaks to us; and it is not rare that this mimic part of the discourse is the most eloquent. Still more there are cases where an intentional movement can be considered at the same time as sympathetic; and it is that which happens when something involuntary mingles with the voluntary act which determines this movement. I will explain: the mode, the manner in which a voluntary movement is executed, is not a thing so exactly determined by the intention which is proposed by it that it cannot be executed in several different ways. Well, then, that which the will or intention leaves undetermined can be sympathetically determined by the state of moral sensibility in which the person is found to be, and consequently can express this state. When I extend the arm to seize an object, I execute, in truth, an intention, and the movement I make is determined in general by the end that I have in view; but in what way does my arm approach the object? how far do the other parts of my body follow this impulsion? What will be the degree of slowness or of the rapidity of the movement? What amount of force shall I employ? This is a calculation of which my will, at the instant, takes no account, and in consequence there is a something left to the discretion of nature.