"The sound of music does not stir me. It acts on my nerves as an irritant. I am unable to listen to music."

"Capitalists are no more capable of self-sacrifice than a man is capable of lifting himself up by his own bootstraps."

"The experience of all revolutions confirms that only the proletariat, as the most advanced and consistently revolutionary class, can be the leader of the entire toiling and exploited people."

"We must learn to approach the masses with the greatest patience and caution, so as not to spoil the work of socialist construction by hasty and clumsy measures."

"The bourgeoisie has nothing to lose but its chains. It has a world to win."