To be radical is to grasp things by the root.

History does nothing; it does not possess immense riches, it does not fight battles. It is men, real, living, who do all this.

The more a ruling class is able to assimilate the most prominent men of a ruled class, the more solid and dangerous its rule.

In this sense, the theory of the Communists may be summed up in the single sentence: Abolition of private property. - Manifesto of the Communist Party

Be aware that the reward for labour, and quantity of labour, are quite disparate things.

In every stockjobbing swindle every one knows that some time or other the crash must come, but every one hopes that it may fall on the head of his neighbor, after he himself has caught the shower of gold and placed it in safety.

Communism is the riddle of history solved, and it knows itself to be this solution.