Lenin, in a moment of uncharacteristic restraint when taking on liberals (spot the biblical allusion):
All your talk about freedom and democracy is sheer claptrap, parrot phrases, fashionable twaddle, or hypocrisy. It is just a painted signboard. And you yourselves are whited sepulchres. You are mean-spirited boors, and your education, culture, and enlightenment are only a species of thoroughgoing prostitution.
Lenin, Collected Works, vol. 13, p. 53.