We argue that there are three norms of critical discussion in stark relief in Republic I. The first we see in the exchange with Cephalus---that we interpret each other and contribute to discussions in a maximally argumentative fashion. The second we seein the exchange with Polemarchus---that in order to cooperate in dialectic, interlocutors must maintain a distance between themselves and the theses they espouse. This way they can subject the views to serious scrutiny without the risk of personal loss. Third, (...) and finally, from Socrates’ exchange with Thrasymachus, it is clear that uncooperative discussants must be handled in a fashion that reinforces the goals of dialectic. So Thrasymachus is refuted and silenced not just for the sake of correcting his definition of justice, but also for the sake of those listening. (shrink)

This book advances a theory of personal, public and political justification. Drawing on current work in epistemology and cognitive psychology, the work develops a theory of personally justified belief. Building on this account, it advances an account of public justification that is more normative and less "populist" than that of "political liberals." Following the social contract theories of Hobbes, Locke and Kant, the work then argues that citizens have conclusive reason to appoint an umpire to resolve disputes arising from inconclusive (...) public justifications. The rule of law, liberal democracy and limited judicial review are defended as elements of a publicly justified umpiring procedure. (shrink)