speaking of republics:
“Institutions serve the same purpose in the life of society as bodily organs do in plants or animals: they are the organs of the social body. Organs do not rise arbitrarily, but because of the definite necessities of the physical and social environment. the eye of a deep-sea fish is formed very differently from that of an animal that lives on land, because it has to satisfy quite different demands. Changed conditions of life produce changed organs. but the organ always performs the function it was evolved to perform, or a related one. And it gradually disappears or becomes rudimentary as soon as its function is no longer necessary to the organism. But an organ never takes on a function that does not accord with its proper purpose.
“The same is true of social institutions. They, too, do not rise arbitrarily, but are called into being by special social needs to serve definite purposes. In this way this modern state was evolved after monopoly economy, and the class divisions associated with them had begun to make themselves more and more conspicuous in the framework of the old social order. The newly arise possessing classes had need of a political instrument of power to maintain their economic and social privileges over the masses of their own people, and to impose them from without on other groups of human beings. Thus arose the appropriate social conditions for the evolution of the modern state, as the organ of political power of privileged castes and classes for the forcible subjugation and oppression of the non-possessing classes. This task is the political lifework of the state, the essential reason for it existing at all. And to this task it has always remained faithful, must remain faithful, for it cannot escape from its skin.
“Its external forms have altered in the course of its historical development, but its functions have always remained the same. They have even been constantly broadened in just the measure in which its supporters have succeeded in making further fields of social activity subservient to their needs. Whether the state be monarchy or republic, whether historically it is anchored to autocracy or in a national constitution, its function remains always the same. And just as the functions of the bodily organs of plants and animals cannot be arbitrarily altered, so that, for example, one cannot at will hear with his eyes and see with his ears, so also one cannot at pleasure transform an organ of social oppression into an instrument for the liberation of the oppressed. The state can only be what it is: the defender of mass exploitation and social privileges, the creator of privileged classes and castes and of new monopolies. Who fails to recognise this function of the state does not understand the real nature of the present social order at all, and is incapable of pointing out to humanity new outlooks for its social evolution.”
- Rudolf Rocker, Anarcho-Syndicalism