These lucid and closely reasoned studies of the thought of Jacques Derrida, Michel Foucault, J?rgen Habermas, and Richard Rorty provide a coherent analysis of major pathways in recent critical theory. They defend a position analogous to Kant's - that ideas of reason are both unavoidable presuppositions of thought that have to be carefully reconstructed and persistent sources of illusions that have to be repeatedly deconstructed.McCarthy examines the...