If, then, it is impossible to expect that human nature, as long as it is only human nature, should act without interruption or feebleness, uniformly and constantly as pure reason, and that it never offend the laws of moral order; if fully persuaded, as we are, both of the necessity and the possibility of pure virtue, we are forced to avow how subject to accident is the exercise of it, and how little we ought to reckon upon the steadfastness of our best principles; if with this conviction of human fragility we bear in mind that each of the infractions of the moral law attacks the edifice of nature, if we recall all these considerations to our memory, it would be assuredly the most criminal boldness to place the interests of the entire world at the mercy of the uncertainty of our virtue. Let us rather draw from it the following conclusion, that it is for us an obligation to satisfy at the very least the physical order by the object of our acts, even when we do not satisfy the exigencies of the moral order by the form of these acts; to pay, at least, as perfect instruments the aims of nature, that which we owe as imperfect persons to reason, in order not to appear shamefaced before both tribunals. For if we refused to make any effort to conform our acts to it because simple legality is without moral merit, the order of the world might in the meanwhile be dissolved, and before we had succeeded in establishing our principles all the links of society might be broken. No, the more our morality is subjected to chance, the more is it necessary to take measures in order to assure its legality; to neglect, either from levity or pride, this legality is a fault for which we shall have to answer before morality. When a maniac believes himself threatened with a fit of madness, he leaves no knife within reach of his hands, and he puts himself under constraint, in order to avoid responsibility in a state of sanity for the crimes which his troubled brain might lead him to commit. In a similar manner it is an obligation for us to seek the salutary bonds which religion and the aesthetic laws present to us, in order that during the crisis when our passion is dominant it shall not injure the physical order.