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Knowingly or unknowingly, we are in the midst of an epistemic revolution (the collapse of Cartesian-Newtonian metaphysics, and the emergence of new ways of thinking as yet scarcely articulated). The conventions of "scientific explanation" as well as the traditional language of rationality are being undermined, and consequently we are compelled to face the subversion of every fixed and final foundation for moral deliberation. Freud's discoveries stand at the head of this century's so-called "linguistic turn" (and hence