Religion is the sigh of the oppressed creature, the heart of a heartless world, just as it is the spirit of a spiritless situation. It is the opium of the people. The abolition of religion as the illusory happiness of the people is required for their real happiness. The demand to give up the illusion about its condition is the demand to give up a condition which needs illusions.
Karl Marx - Religion - Spirit - Happiness - Oppression

Men make their own history, but they do not make it just as they please; they do not make it under circumstances chosen by themselves, but under circumstances directly encountered, given and transmitted from the past.
Karl Marx - History - People

Just as the savage must wrestle with nature to satisfy his wants, to maintain and reproduce life, so must civilised man, and he must do so in all social formations and under all possible modes of production.
Karl Marx - People - Nature - Social

Between capitalist and communist society there lies the period of the revolutionary transformation of the one into the other. Corresponding to this is also a political transition period in which the state can be nothing but the revolutionary dictatorship of the proletariat.
Karl Marx - Social - Capitalism - Communism - Change - Revolution - Politics - Proletariat - Class - Dictator

We develop new principles for the world out of the world’s own principles. We do not say to the world: Cease your struggles, they are foolish; we will give you the true slogan of struggle. We merely show the world what it is really fighting for, and consciousness is something that it has to acquire, even if it does not want to.
Karl Marx - World - Struggle - Fool - Conscious

Communism is the riddle of history solved, and it knows itself to be this solution.
Karl Marx - History - Communism - Solutions

Landlords, like all other men, love to reap where they never sowed.
Karl Marx - Real Estate - Laziness - Landlord - Greed

Let the ruling classes tremble at a communist revolution. The proletarians have nothing to lose but their chains. They have a world to win. Working men of all countries, unite!
Karl Marx - Oppression - Capitalism - Communism - Revolution - Proletariat - Class - Ruling Class - Lose - Win - Working Class

Under private property, each tries to establish over the other an alien power, so as thereby to find satisfaction of his own selfish need. The increase in the quantity of objects is therefore accompanied by an extension of the realm of the alien powers to which man is subjected, and every new product represents a new potentiality of mutual swindling and mutual plundering.
Karl Marx - Property - Power - Selfish - Assets - Social - Satisfaction

Political economy regards the proletarian like a horse, he must receive enough to enable him to work. It does not consider him, during the time when he is not working, as a human being. It leaves this to criminal law, doctors, religion, statistical tables, politics, and the beadle.
Karl Marx - Religion - Politics - Proletariat - Class - Working Class - Economy - Work - Value - Law - Doctor

The state is based on this contradiction. It is based on the contradiction between public and private life, between universal and particular interests. For this reason, the state must confine itself to formal, negative activities.
Karl Marx - Contradiction - Politics - Life

Greek philosophy seems to have met with something with which a good tragedy is not supposed to meet, namely, a dull ending.
Karl Marx - Greek - Philosophy

The philosophers have only interpreted the world, in various ways. The point, however, is to change it.
Karl Marx - Change - Philosophy - World