Philosophy written in English is overwhelmingly analytic philosophy, and the techniques and predilections of analytic philosophy are not only unhistorical but anti-historical, and hostile to textual commentary. Analytic usually aspires to a very high degree of clarity and precision of formulation and argument, and it often seeks to be informed by, and consistent with, current natural science. In an earlier era, analytic philosophy aimed at agreement with ordinary linguistic intuitions or common sense beliefs, or both. All of these aspects of the subject sit uneasily with the use of historical...