It is not difficult to make application of these examples to what the human face could be under the government of the mind. If the mind is manifested in such a way through the sensuous nature subject to its empire that it executes its behests with the most faithful exactitude, or expresses its sentiments in the most perfectly speaking manner, without going in the least against that which the æsthetic sense demands from it as a phenomenon, then we shall see produced that which we call _grace_. But this is far from being grace, if mind is manifested in a constrained manner by the sensuous nature, or if sensuous nature acting alone in all liberty the expression of moral nature was absent. In the first case there would not be beauty; in the second the beauty would be devoid of _play_. The super-sensuous cause, therefore, the cause of which the principle is in the soul, can alone render grace speaking, and it is the purely sensuous cause having its principle in nature which alone can render it beautiful. We are not more authorized in asserting that mind engenders beauty than we should be, in the former example, in maintaining that the chief of the state produces liberty; because we can indeed leave a man in his liberty, but not give it to him. But just as when a people feels itself free under the constraint of a foreign will, it is in a great degree due to the sentiments animating the prince; and as this liberty would run great risks if the prince took opposite sentiments, so also it is in the moral dispositions of the mind which suggests them that we must seek the beauty of free movements. And now the question which is presented is this one: What then are the conditions of personal morality which assure the utmost amount of liberty to the sensuous instruments of the will? and what are the moral sentiments which agree the best in their expression with the beautiful? That which is evident is that neither the will, in the intentional movement, nor the passion, in the sympathetic movement, ought to act as a force with regard to the physical nature which is subject to it, in order that this, in obeying it, may have beauty. In truth, without going further, common sense considers _ease_ to be the first requisite of grace. It is not less evident that, on another side, nature ought not to act as a force with regard to mind, in order to give occasion for a fine moral expression; for there, where physical nature commands alone, it is absolutely necessary that the character of the man should vanish.