"Here I encounter the most popular fallacy of our times. It is not considered sufficient that the law should guarantee to every citizen the free and inoffensive use of his faculties for physical, intellectual and moral self-improvement. Instead, it is demanded that the law should directly extend welfare, education, and morality throughout the nation. This is the seductive lure of socialism. And I repeat: these two uses of the law are in direct contradiction to each other."

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However much pains may be taken to combine the soldier and the citizen in one and the same individual, whatever may be done to nationalize wars, never will it be possible to do away with the professionalism of the business; and if that cannot be done, then those who belong to it will always look upon themselves as a kind of guild, in the regulations, laws, and customs in which the "Spirit of War" finds its expression. It would be very wrong to look down upon this corporate spirit, or esprit de corps, which may and should exist more or less in every Army.

— Carl von Clausewitz