It is not so with obligation. It exists not, or it is absolute. The idea of obligation implies that of something inflexible. That alone is a duty from which one cannot be loosed under any pretext, and is, by the same title, a duty for all. There is one thing before which all the caprices of my mind, of my imagination, of my sensibility must disappear,--the idea of the good with the obligation which it involves. To this supreme command I can oppose neither my humor, nor circumstances, nor even difficulties. This law admits of no delay, no accommodation, no excuse. When it speaks, be it to you or me, in whatever place, under whatever circumstance, in whatever disposition we may be, it only remains for us to obey. We are able not to obey, for we are free; but every disobedience to the law appears to ourselves a fault more or less grave, a bad use of our liberty. And the violated law has its immediate penal sanction in the remorse that it inflicts upon us. The only penalty that is brought upon us by the counsels of prudence, comprehended more or less well, followed more or less well, is, in the final account, more or less happiness or unhappiness. Now I pray you, am I obligated to be happy? Can obligation depend upon happiness, that is to say, on a thing that it is equally impossible for me to always seek and obtain at will? If I am obligated, it must be in my power to fulfil the obligation imposed. But my liberty has but little power over my happiness, which depends upon a thousand circumstances independent of me, whilst it is all in all in regard to virtue, for virtue is only an employment of liberty. Moreover, happiness is in itself, morally, neither better nor worse than unhappiness. If I understand my interest badly, I am punished for it by regret, not by remorse. Unhappiness can overwhelm me; it does not disgrace me, if it is not the consequence of some vice of the soul. Not that I would renew stoicism and say to suffering, Thou art no evil. No, I earnestly advise man to escape suffering as much as he can, to understand well his interest, to shun unhappiness and seek happiness. I only wish to establish that happiness is one thing and virtue another, that man necessarily aspires after happiness, but that he is only obligated to virtue, and that consequently, by the side of and above interest well understood is a moral law, that is to say, as consciousness attests, and the whole human race avows, an imperative prescription of which one cannot voluntarily divest himself without crime and shame. 4th. If interest does not account for the idea of duty, by a necessary consequence, it does not more account for that of right; for duty and right reciprocally suppose each other.