Revolutions are the locomotives of history.

Religion is the sigh of the oppressed creature, the heart of a heartless world, and the soul of soulless conditions. It is the opium of the people.

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

If the labourer consumes his disposable time for himself, he robs the capitalist.

All science would be superfluous if the outward appearance and the essence of things directly coincided.

Go on, get out - last words are for fools who haven't said enough. To his housekeeper, who urged him to tell her his last words so she could write them down for posterity.

Modern bourgeois society with its relations of production, of exchange, and of property, a society that has conjured up such gigantic means of production and of exchange, is like the sorcerer, who is no longer able to control the powers of the nether world whom he has called up by his spells.