Full Idea
The working class, in the course of its development, will substitute for the old civil society, an association which will exclude classes and their antagonism.
Gist of Idea
The working class will gradual exclude social classes and their antagonisms
Source
Karl Marx (Collected works (w Engels) - 50 vols [1860], Vol 6:212), quoted by Jaime Edwards/Brian Leiter - Marx 3.4A
A Reaction
A hopeless dream. The exclusion of the formation of classes will need to be enforced, which will necessitate a group with superior power (the Communist Party, for example). A group with superior power was precisely what Marx hoped to avoid.
Book Reference
Edwards,J/Leiter,B: 'Marx' [Routledge 2025], p.82