The Conquest of Bread by Peter Kropotkin

We have said that certain collectivist writers desire that a distinction should be made between qualified or professional work and simple work. They pretend that an hour's work of an engineer, an architect, or a doctor, must be considered as two or three hours' work of a blacksmith, a mason, or a hospital nurse. And the same distinction must be made between all sorts of trades necessitating apprenticeship, and the simple toil of day labourers.

Well, to establish this distinction would be to maintain all the inequalities of present society. It would mean fixing a dividing line, from the beginning, between the workers and those who pretend to govern them. It would mean dividing society into two very distinct classes -- the aristocracy of knowledge placed above the horny-handed lower orders -- the one doomed to serve the other; the one working with its hands to feed and clothe those who, profiting by their leisure, study how to govern their fosterers.