The goal of this book is not to settle once and for all the conceptual debate by proposing coherent and authoritative definitions. We have instead come to the Wittgensteinian conclusion that the meaning of transnationalism and diaspora must be inferred from their actual uses. This pragmatic attitude suggests also that the best test for the present academic value of these concepts lies in their capacity to trigger new research perspectives and questions. This is the test that we wanted to apply in this volume. And we think that the result is positive.