La classe borghese rappresenta i propri interessi come interesse comune di tutta la società

“For each new class which puts itself in the place of one ruling before it, is compelled, merely in order to carry through its aim, to represent its interest as the common interest of all the members of society, put in an ideal form; it will give its ideas the form of universality, and represent them as the only rational, universally valid ones. The class making a revolution appears from the very start, merely because it is opposed to a ‘class’, not as a class but as the representative of the whole of society; it appears as the whole mass of society confronting the one ruling class. It can do this because, to start with, its interest really is more connected with the common interest of all other non-ruling classes, because under the pressure of conditions its interest has not yet been able to develop as the particular interest of a particular class. Its victory, therefore, benefits also many individuals of the other classes which are not winning a dominant position, but only in so far as it now puts these individuals in a position to raise themselves into the ruling class. When the French bourgeoisie overthrew the power of the aristocracy, it thereby made it possible for many proletarians to raise themselves above the proletariat, but only in so far as they became bourgeois. Every new class, therefore, achieves its hegemony only on a broader basis than that of the class ruling previously, in return for which the opposition of the non-ruling class against the new ruling class later develops all the more sharply and profoundly. Both these things determine the fact that the struggle to be waged against this new ruling class, in its turn, aims at a more decided and radical negation of the previous conditions of society than could all previous classes which sought to rule. This whole semblance, that the rule of a certain class is only the rule of certain ideas, comes to a natural end, of course, as soon as society ceases at last to be organised in the form of class-rule, that is to say as soon at it is no longer necessary to represent a particular interest as general or ‘the general interest’ as ruling’ [Marx Engels, The German Ideology, (G.I. pp. 40-41)] [(in) ‘Essential Writings of Karl Marx’, a cura di David Caute, London, 1967]