How closely juridical relations are linked with the development of these material forces arising from the division of labour is already clear from the historical development of juridical authority and the complaints of the feudal lords about the development of right. … It was just in the epoch between the rule of the aristocracy and the rule of the bourgeoisie, when the interests of two classes came into conflict, when trade between the European nations came to be important, and hence international relations themselves assumed a bourgeois character, it was just at that time that the power of the courts began to be important, and under the rule of the bourgeoisie, when this broadly developed division of labour became absolutely essential, the power of the courts reached its highest point. What the servants of the division of labour, the judges and still more the professores juris, imagine in this connection is a matter of the greatest indifference.