The worker of the world has nothing to lose, but their chains, workers of the world unite.

We should not say that one man's hour is worth another man's hour, but rather that one man during an hour is worth just as much as another man during an hour. Time is everything, man is nothing: he is at the most time's carcass.

There is a specter haunting Europe, the specter of Communism.

The theory of Communism may be summed up in one sentence: Abolish all private property.

Workers of the world unite; you have nothing to lose but your chains.

Without doubt, machinery has greatly increased the number of well-to-do idlers.

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.