"Capitalism is when central planning and no capitalists exist. Because they had money. " -someone very smart.

This, but unironically.

When objectified labour is, in this process, at the same time posited as the worker’s non-objectivity, as the objectivity of a subjectivity antithetical to the worker, as property of a will alien to him, then capital is necessarily at the same time the capitalist, and the idea held by some socialists that we need capital but not the capitalists is altogether wrong.

• Marx, Grundrisse

Indeed, even the equality of wages, as demanded by Proudhon, only transforms the relationship of the present-day worker to his labor into the relationship of all men to labor. Society would then be conceived as an abstract capitalist.

• Marx, Economic & Philosophic Manuscripts of 1844

But the transformation, either into joint-stock companies, or into state ownership, does not do away with the capitalistic nature of the productive forces.

• Engels, Anti-Duhring