Before a revolution happens, it is perceived as impossible; after it happens, it is seen as having been inevitable.

Freedom only for the members of the government, only for the members of the Party - though they are quite numerous - is no freedom at all.

[Geology] opens up such wide intellectual vistas and supplies a more perfectly unified and more comprehensive conception of nature than any other science.

Marxism is a revolutionary worldview that must always struggle for new revelations.

Freedom is always the freedom of dissenters.

The most revolutionary thing one can do is always to proclaim loudly what is happening.

With the true artist, the social formula that he recommends is a matter of secondary importance; the source of his art, its animating spirit, is decisive.