Robert Nozick seeks to extract a substantive theory of distributive justice (“the entitlement theory”) from what he takes to be the formal properties of natural rights (or rights-based) theory. The unsoundness of his arguments supports the longstanding suspicion that all such theories are conceptually confused and ideological biased. Yet upon examination, the classical (chiefly Lockean) views that Nozick regards as a prototype of natural rights theory withstand that suspicion precisely in so far as they lack the formal properties of his own theory. I conclude that theories of the classical form are better equipped to resolve political arguments.