Abstract

The original Dutch version of this book, whose translator is Herbert D. Morton, was a 1979 doctoral dissertation in philosophy at the Free University of Amsterdam. J. van der Hoeven of the Free University and G. Nuchelmans of the University of Leiden were supervisors of the dissertation. Undoubtedly this monograph was an excellent dissertation which showed its author to be capable of making significant contributions to the history and philosophy of logic. In his commentary on a fragment of John Stuart Mill's logical theory, de Jong shows that he is capable of selecting relevant material from several medieval and early modern logicians and of using interpretations and criticisms of contemporaries. For instance, the concluding chapter, "Appraisal," compares Mill and Kripke on naming. The historical and contemporary sources are relevant for establishing significant theses about Mill's logical theory. He exhibits a talent for portraying logical and semantical theories on charts and diagrams. These several charts and diagrams are some of the most valuable parts of the book. His numerous critical comments on the many views and doctrines summarized indicate an awareness of crucial philosophical problems. Unfortunately, features which fulfill the dissertation function of showing the author capable of making significant contributions may hinder readers from appreciating this book itself as being a significant contribution to the history or philosophy of logic or to the interpretation of John Stuart Mill. The display of so many themes from so many historical figures becomes confusing. The need in a dissertation to show critical awareness leads, in my judgment, to frequent use of the correct but superficial criticism that a writer used concepts in an unclear way. We are led to fear this type of unsympathetic criticism when we read on the first page of the introduction the phrase: "Mill's outrageously sloppy manner of formulating." We should hope that de Jong exploits his dissertation to develop more narrowly focused and more penetrating analyses in papers and in monographs whose significance can be more readily appreciated.