Perseus wore a magic cap that the monsters he hunted down might not see him. We draw the magic cap down over eyes and ears as a make-believe that there are no monsters.

Follow your own path, no matter what people say.

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

When commercial capital occupies a position of unquestioned ascendancy, it everywhere constitutes a system of plunder.

Capital is reckless of the health or length of life of the laborer, unless under compulsion from society.

Accumulate, accumulate! This is Moses and the Prophets!

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.