Value-form
The Western Left academics are nowadays very happy to talk about "varieties of capitalism", but talking about "varieties of socialism" remains almost an absolute "no-no". Most Marxists continue to believe in "only one" (Marxian) socialism: either that, or nothing at all. "Either" a society or movement conforms to the true concept of socialism, "or" it does not; and if it does not, it "cannot be" socialism. However, precisely "because" there are many different Marxist beliefs about socialism, Marxists cannot agree among themselves whether Soviet-type societies were socialist, capitalist, or something else. Some countries meet with the moral expectations which Marxists have, and others do not.Originally Marx and Engels themselves had heckled the advocates of "true socialism", but later Friedrich Engels and Karl Kautsky promoted Marxist socialism as the one and true "scientific socialism" within the Socialist International. When he was 43 years old, Lenin stated: "The Marxist doctrine is omnipotent because it is true". Lenin's Communist International (a deliberate split with the social democrats) adopted Marxist socialism as its official political doctrine.
Analytical Marxism
The analytical (and rational choice) Marxists held a variety of leftist political sympathies, ranging from communism to reformist social democracy. Through the 1980s, most of them began to believe that Marxism as a theory capable of explaining revolution in terms of the economic dynamics of capitalism and the class interests of the proletariat had been seriously compromised. They were largely in agreement that the transformation of capitalism was an ethical project. During the 1980s, a debate had developed within Anglophone academia about whether Marxism could accommodate a theory of justice. This debate was clearly linked to the revival of normative political philosophy after the publication of John Rawls's "A Theory of Justice" (1971). Some commentators remained hostile to the idea of a Marxist theory of justice, arguing that Marx saw "justice" as little more than a bourgeois ideological construct designed to justify exploitation by reference to reciprocity in the wage contract.