Txetxu Ausin

The aim of this paper is to connect Leibniz’s and Toulmin’s conceptions about practical and deliberative rationality. When trying to rationally justify contingent judgments Leibniz, like Toulmin, defends a weighing argumentative method. Thus, in Leibniz we can discern the balance between the legitimate demands of formal models of rationality and the lessons of a practice “situated” on a historical, social, and evaluative context.