This dictionary is written by one of the leading philosophers of our time, and it is recognized as the best dictionary of its kind. Comprehensive and authoritative, it includes over 3,300 alphabetical entries, it is the ideal introduction to philosophy for anyone with an interest in the subject, as well as students and teachers. A very useful and handy dictionary with clearly written notices, which focus on the essential aspects. It should belong to the bookshelf of any student or scientist interested in the impact of philosophical questions. I shall recommend it for the part of my course devoted to the nature of science.