The theory of the Communists may be summed up in the single sentence: Abolition of private property.
Democracy is the road to socialism.
It is absolutely impossible to transcend the laws of nature. What can change in historically different circumstances is only the form in which these laws expose themselves.
Landlords, like all other men, love to reap where they never sowed.
Hitherto, every form of society has been based … on the antagonism of oppressing and oppressed classes.
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.
Capitalist production, therefore, develops technology, and the combining together of various processes into a social whole, only by sapping the original sources of all wealth — the soil and the labourer.
The proletarians have nothing to lose but their chains.
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.
A specter is haunting Europe – the specter of communism.
A spider conducts operations that resemble those of a weaver, and a bee puts to shame many an architect in the construction of her cells. But what distinguishes the worst architect from the best of bees is this, that the architect raises his structure in imagination before he erects it in reality.
I do not like money, money is the reason we fight.
The need of a constantly expanding market for its products chases the bourgeoisie over the whole surface of the globe. It must nestle everywhere, settle everywhere, establish connexions everywhere.
The road to Hell is paved with good intentions.
Art is always and everywhere the secret confession, and at the same time the immortal movement of its time.
Greek philosophy seems to have met with something with which a good tragedy is not supposed to meet, namely, a dull ending.
The country that is more developed industrially only shows, to the less developed, the image of its own future
Reason has always existed, but not always in a reasonable form.
Natural science will in time incorporate into itself the science of man, just as the science of man will incorporate into itself natural science: there will be one science.
Men’s ideas are the most direct emanations of their material state.
Revolutions are the locomotives of history.
Experience praises the most happy the one who made the most people happy.
Christian Socialism is but the holy water with which the priest consecrates the heart-burnings of the aristocrat.
Religion is the opium of the masses.
From each according to his abilities, to each according to his needs.
Medicine heals doubts as well as diseases.