As with almost all books, this one took much longer to complete than we thought when we started. It began within the research project "Actions and Passions of the Mind from 1200-1700" which was financed by the Nordic Research Council in the Humanities (NOS-H) between 1999 and 2001, but as the topic became clearer the book grew and the final product involves several people outside the original group in the NOS-H project. Many of the papers published here started as talks given at meetings of the project, but no meeting resembles the finished book. Indeed, all the articles are, in the end,...

Central topics in medieval logic are here treated in a way that is congenial to the modern reader, without compromising historical reliability. The achievements of medieval logic are made available to a wider philosophical public then the medievalists themselves. The three genres of logica moderna arising in a later Middle Ages are covered: obligations, insolubles and consequences - the first time these have been treated in such a unified way. The articles on obligations look at the role of logical consistence in medieval disputation techniques. Those on insolubles concentrate on...