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Habermas's essay on George Herbert Mead is a focal point of the book. In it he sketches a postmetaphysical, intersubjective approach to questions of individuation and subjectivity. In other essays, he develops his distinctive, communications-theoretic approach to questions of meaning and validity. The book as a whole expands on his earlier efforts to define a middle ground between nostalgic revivals of metaphysical conceptions of reason and radical deconstructions of reason.