"The development of productive forces has reached a point where the existence of private property and the bourgeoisie are incompatible with further social development."

"Has a real taler any existence except in the imagination, if only in the general or rather common imagination of man? Bring paper money into a country where this use of paper is unknown, and everyone …"

"The demand for a free press is essentially a demand for the freedom of public opinion."

"All that is solid melts into air, all that is holy is profaned, and man is at last compelled to face with sober senses his real conditions of life, and his relations with his kind."

"The history of all hitherto existing society is the history of class struggles."