So far no chemist has ever discovered exchange-value either in a pearl or a diamond.

The philosophers have only interpreted the world, in various ways: the point, however, is to change it.

The need of a constantly expanding market for its products chases the bourgeoisie over the entire surface of the globe. It must nestle everywhere, settle everywhere, establish connections everywhere. The bourgeoisie has, through its exploitation of the world market, given a cosmopolitan character to production and consumption in every country. To the great chagrin of reactionaries, it has drawn from under the feet of industry the national ground on which it stood.

The state is the executive committee of the ruling class.

The only antidote to mental suffering is physical pain.

In the domain of Political Economy, free scientific inquiry meets not merely the same enemies as in all other domains. The peculiar nature of the material it deals with, summons as foes into the field of battle the most violent, mean and malignant passions of the human breast, the Furies of private interest.

All I know is I'm not a Marxist.