But all the movements of man are not capable of grace. Grace is never otherwise than beauty of form animated into movement by free will; and the movements which belong only to physical nature could not merit the name. It is true that an intellectual man, if he be keen, ends by rendering himself master of almost all the movements of the body; but when the chain which links a fine lineament to a moral sentiment lengthens much, this lineament becomes the property of the structure, and can no longer be counted as a grace. It happens, ultimately, that the mind moulds the body, and that the structure is forced to modify itself according to the play that the soul imprints upon the organs, so entirely, that grace finally is transformed--and the examples are not rare--into architectonic beauty. As at one time an antagonistic mind which is ill at ease with itself alters and destroys the most perfect beauty of structure, until at last it becomes impossible to recognize this magnificent chef-d'oeuvre of nature in the state to which it is reduced under the unworthy hands of free will, so at other times the serenity and perfect harmony of the soul come to the aid of the hampered technique, unloose nature and develop with divine splendor the beauty of form, enveloped until then, and oppressed. The plastic nature of man has in it an infinity of resources to retrieve the negligencies and repair the faults that she may have committed. To this end it is sufficient that the mind, the moral agent, sustain it, or even withhold from troubling it in the labor of rebuilding. Since the movements become fixed (gestures pass to a state of lineament), are themselves capable of grace, it would perhaps appear to be rational to comprehend equally under this idea of beauty some apparent or imitative movements (the flamboyant lines for example, undulations). It is this which Mendelssohn upholds. But then the idea of grace would be confounded with the ideal of beauty in general, for all beauty is definitively but a property of true or apparent movement (objective or subjective), as I hope to demonstrate in an analysis of beauty. With regard to grace, the only movements which can offer any are those which respond at the same time to a sentiment.