The history of all previous societies has been the history of class struggles.
History does nothing it does not possess immense riches, it does not fight battles. It is men, real, living, who do all this.
The meaning of peace is the absence of opposition to socialism.
Revolutions are the locomotives of history.
Society does not consist of individuals but expresses the sum of interrelations, the relations within which these individuals stand.
The ruling ideas of each age have ever been the ideas of its ruling class.
Capital is reckless of the health or length of life of the laborer, unless under compulsion from society.
The first requisite for the happiness of the people is the abolition of religion.
In bourgeois society capital is independent and has individuality, while the living person is dependent and has no individuality.
Experience praises the most happy the one who made the most people happy.
The writer must earn money in order to be able to live and to write, but he must by no means live and write for the purpose of making money.
Greek philosophy seems to have met with something with which a good tragedy is not supposed to meet, namely, a dull ending.
Necessity is blind until it becomes conscious. Freedom is the consciousness of necessity.
Men's ideas are the most direct emanations of their material state.
The country that is more developed industrially only shows, to the less developed, the image of its own future.
History repeats itself, first as tragedy, second as farce.
Religion is the opium of the masses.
Landlords, like all other men, love to reap where they never sowed.
The writer may very well serve a movement of history as its mouthpiece, but he cannot of course create it.
Religion is the impotence of the human mind to deal with occurrences it cannot understand.