Generally, what is demanded of virtue is not properly speaking dignity, but grace. Dignity is implicitly contained in the idea of virtue, which even by its nature supposes already the rule of man over his instincts. It is rather sensuous nature that, in the fulfilment of moral duties, is found in a state of oppression and constraint, particularly when it consummates in a painful sacrifice. But as the ideal of perfection in man does not require a struggle, but harmony between the moral and physical nature, this ideal is little compatible with dignity, which is only the expression of a struggle between the two natures, and as such renders visible either the particular impotence of the individual, or the impotence common to the species. In the first case, when the want of harmony between inclination and duty, with regard to a moral act, belongs to the particular powerlessness of the subject, the act would always lose its moral value, in as far as that combat is necessary, and, in consequence, proportionally as there would be dignity in the exterior expression of this act; for our moral judgment connects each individual with the common measure of the species, and we do not allow man to be stopped by other limits than those of human nature. In the second case, when the action commanded by duty cannot be placed in harmony with the exigencies of instinct without going against the idea of human nature, the resistance of the inclination is necessary, and then only the sight of the combat can convince us of the possibility of victory. Thus we ask here of the features and attitudes an expression of this interior struggle, not being able to take upon ourselves to believe in virtue where there is no trace of humanity. Where then the moral law commands of us an action which necessarily makes the sensuous nature suffer, there the matter is serious, and ought not to be treated as play; ease and lightness in accomplishing this act would be much more likely to revolt us than to satisfy us; and thus, in consequence, expression is no longer grace, but dignity. In general, the law which prevails here is, that man ought to accomplish with grace all the acts that he can execute in the sphere of human nature; and with dignity all those for the accomplishment of which he is obliged to go beyond his nature.