 Bakunin saw that "there is no fixed and constant authority, but a continual exchange of mutual, temporary, and, above all, voluntary authority and subordination.This same reason forbids me, then, to recognise a fixed, constant and universal authority, because there is no universal man, no man capable of grasping in all that wealth of detail, without which the application of science to life is impossible, all the sciences, all the branches of social life".According to political philosopher Carl Schmitt, "in comparison with later anarchists, Proudhon was a moralistic petit bourgeois who continued to subscribe to the authority of the father and the principle of the monogamous family.