The editors of the Springer Law and Philosophy series – Francisco Laporta, Frederick Schauer, and Torben Spaak – are pleased and honored to recognize this book as the 100th volume in the Law and Philosophy series. The Law and Philosophy series was started in 1985, with the late Michael Bayles and Alan Rabe as the initial editors. Shortly thereafter Aulius Aarnio joined them, thus creating the three-person team that entrenched the series as an important, thoroughly academic, and always peer-reviewed publication outlet within the world of legal philosophy. Although the series has, over its 27 years and 100 volumes, published work by some of the major fi gures in Anglo-American legal theory – Neil MacCormick and Robert Summers are noteworthy in this regard – its primary mission can be understood in terms of two other concentrations. One is to make available the best English-language legal philosophy emanating from non-English-speaking countries. Increasingly, and for better or for worse, English is becoming the major language of worldwide academic discourse, and legal philosophy is no exception. This phenomenon, however, has produced a publication gap, since most of the major academic publishers in English-language countries focus predominantly on work coming from those countries. This focus threatens to make legal philosophy increasingly provincial, and the editors are proud of the fact that the series has become the pre-eminent publication outlet for some of the best scholarship in the philosophy of law coming from countries whose primary language is not English. The series has been and will always be in English, and it is a publication requirement that the books be fl uent and idiomatic in that language, but the more that the English language tends to predominate as the international language of legal philosophy, the more important becomes this aspect of the mission of the series.