" relations of production correspond to a definite stage of development of their material productive forces. The sum total of these relations of production...forms the real basis on which rises a legal and political superstructure. At a certain stage of their development, the material productive forces of society come into conflict with the existing relations of production. From forms of development of the productive forces these relations turn into fetters. Then begins an epoch of social revolution. With the change of the economic foundation the immense superstructure is rapidly transformed."
The third law, "negation of the negation", originated with Hegel. Although Hegel coined the term "negation of the negation", it gained its fame from Marx's using it in Capital . There Marx wrote this: "The [death] knell of capitalist private property sounds. The expropriators [capitalists] are expropriated. The capitalist mode of appropriation, the result of the capitalist mode of production, produces capitalist private property. This is the first negation [antithesis] of individual private property. [The "first negation", or antithesis, negates the thesis, which in this instance is feudalism, the economic system that preceded capitalism.] ... But capitalist production begets, with the inexorability of a law of Nature, its own negation. It [final communism, the synthesis] is the negation of [the] negation."