History does nothing; it does not possess immense riches, it does not fight battles. It is men, real, living, who do all this.

From the outset, the Christian was the theorizing Jew, the Jew is therefore the practical Christian, and the practical Christian has become a Jew again.

The weapon of criticism can never replace the criticism of weapons.

The need of a constantly expanding market for its products chases the bourgeoisie over the entire surface of the globe.

The unity of the bourgeoisie can be shaken only by the unity of the proletariat.

Communism deprives no man of the ability to appropriate the fruits of his labour. The only thing it deprives him of is the ability to enslave others by means of such appropriations.

The Communists have no need to introduce free love; it has existed almost from time immemorial.