"In a society based upon exploitation, the highest moral is that of the social revolution. All methods are good which raise the class consciousness of the workers, their trust in their own forces, their readiness for self-sacrifice in the struggle. The impermissible methods are those which implant fear and submissiveness in the oppressed before their oppressors, which crush the spirit of protest and indignation or substitute for the will of the masses - the will of the leaders; for conviction - compulsion; for an analysis of reality - demagogy and frame-up. That is why Social Democracy, prostituting Marxism, and Stalinism - the antithesis of Bolshevism - are both mortal enemies of the proletarian revolution and its morals."

—Leon Trotsky, "Transitional Program". Against Opportunism and Unprincipled Revisionism.