One to stir up the romantic Western Marxists full of resentment at successful socialist revolutions in the East:
Socialism is inconceivable without large-scale capitalist engineering based on the latest discoveries of modern science. It is inconceivable without planned state organisation which keeps tens of millions of people to the strictest observance of a unified standard in production and distribution. We Marxists have always spoken of this, and it is not worth while wasting two seconds talking to people who do not understand even this (anarchists and a good half of the Left Socialist-Revolutionaries) (Lenin, Collected Works, vol. 32, p. 334, 1921).