theory, that which is called good is conservative of the species, what is called evil, however, is detrimental to it. But in reality the evil impulses are just in as high a degree expedient, indispensable, and conservative of the species as the good:—only, their function is different. 5. _Unconditional Duties._—All men who feel that they need the strongest words and intonations, the most eloquent gestures and attitudes, in order to operate _at all_—revolutionary politicians, socialists, preachers of repentance with or without Christianity, with all of whom there must be no mere half-success,—all these speak of "duties," and indeed, always of duties, which have the character of being unconditional—without such they would have no right to their excessive pathos: they know that right well! They grasp, therefore, at philosophies of morality which preach some kind of categorical imperative, or they assimilate a good lump of religion, as, for example, Mazzini did. Because they want to be trusted unconditionally, it is first of all necessary for them to trust themselves unconditionally, on the basis of some ultimate, undebatable command, sublime in itself, as the ministers and instruments of which, they would fain feel and announce themselves. Here we have the most natural, and for the most part, very influential opponents of moral enlightenment and scepticism: but they are rare. On the other hand, there is always a very numerous class of those opponents wherever interest teaches subjection, while repute and honour seem to forbid it. He who feels himself dishonoured at the thought of being the _instrument_ of a prince, or of a party and sect, or even of wealthy power (for example, as the descendant of a proud, ancient family), but wishes just to be this instrument, or must be so before himself and before the public—such a person has need of pathetic principles which can at all times be appealed to:—principles of an unconditional _ought_, to which a person can subject himself without shame, and can show himself subjected. All more refined servility holds fast to the categorical imperative, and is the mortal enemy of those who want to take away the unconditional character of duty: propriety demands this from them, and not only propriety. 6.