Although grace ought to be, or at least ought to appear, something involuntary, still we seek it only in the movements that depend more or less on the will. I know also that grace is attributed to a certain mimic language, and we say a pleasing smile, a charming blush, though the smile and the blush are sympathetic movements, not determined by the will, but by moral sensibility. But besides that, the first of these movements is, after all, in our power, and that it is not shown that in the second there is, properly speaking, any grace, it is right to say, in general, that most frequently when grace appears it is on the occasion of a voluntary movement. Grace is desired both in language and in song; it is asked for in the play of the eyes and of the mouth, in the movements of the hands and the arms whenever these movements are free and voluntary; it is required in the walk, in the bearing, and attitude, in a word, in all exterior demonstrations of man, so far as they depend on his will. As to the movements which the instinct of nature produces in us, or which an overpowering affection excites, or, so to speak, is lord over; that which we ask of these movements, in origin purely physical, is, as we shall see presently, quite another thing than grace. These kinds of movements belong to nature, and not to the person, but it is from the person alone, as we have seen, that all grace issues. If, then, grace is a property that we demand only from voluntary movements, and if, on the other hand, all voluntary element should be rigorously excluded from grace, we have no longer to seek it but in that portion of the intentional movements to which the intention of the subject is unknown, but which, however, does not cease to answer in the soul to a moral cause. We now know in what kind of movements he must ask for grace; but we know nothing more, and a movement can have these different characters, without on that account being graceful; it is as yet only speaking (or mimic). I call speaking (in the widest sense of the word) every physical phenomenon which accompanies and expresses a certain state of the soul; thus, in this acceptation, all the sympathetic movements are speaking, including those which accompany the simple affections of the animal sensibility.