There must be something rotten in the very core of a social system which increases its wealth without diminishing its misery

Once the inner connection is grasped, all theoretical belief in the permanent necessity of existing conditions collapses before their collapse in practice -- Letter to Ludwig Kugelmann (July 11, 1868)

Be careful to trust a person who does not like wine.

If anything is certain, it is that I myself am not a Marxist.

Nothing can have value without being an object of utility.

The rich will do anything for the poor but get off their backs.

The capitalist mode of production and accumulation, and therefore capitalist private property, have for their fundamental condition the annihilation of self-earned private property: in other words, the expropriation of the labourer.