'If handbooks can be inspiring, this is it! Like a true companion, it takes in its stride conversations both big and small. Its entries do not just present an international and multidisciplinary mix, but - true to life - they work on several different scales. And, importantly, the book makes its authority evident. For it is like an extended website, but with all the added advantages of an encyclopaedia that actually tells you about the authors and the sources on which they have drawn. The resulting compilation is highly intelligent, thoughtful and above all usable.'