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Well perhaps you should quit scolding people for not reading famous authors..............
Metaphysics designates any system of knowledge a priori that consists of pure conceptions. Accordingly, a practical philosophy not having nature, but the freedom of the will for its object, will presuppose and require a metaphysic of morals. It is even a duty to have such a metaphysic; and every man does, indeed, possess it in himself, although commonly but in an obscure way. For how could any one believe that he has a source of universal law in himself, without principles a priori? And just as in a metaphysics of nature there must be principles regulating the application of the universal supreme principles of nature to objects of experience, so there cannot but be such principles in the metaphysic of morals; and we will often have to deal objectively with the particular nature of man as known only by experience, in order to show in it the consequences of these universal moral principles.
http://philosophy.eserver.org/kant/intro-to-metaphys-of-morals.txt
Way overposting and apologizing and going back to lurking