This book would not have been possible without the support of colleagues and friends. I want to thank Michelle Bruni, Elizabeth Rowley-Jolivet, Pablo Ruiz Fabo, and Bernard Victorri for their help during the preparation of this book. My gratitude also goes to the editorial and production staff at MIT Press, particularly Marie Lufkin Lee and Katherine A. Almeida. Finally, I want to thank the anonymous reviewers for their careful reading and their many insightful comments and suggestions.
Thierry Poibeau is a member of LATTICE, a research laboratory supported by CNRS, Ecole normale supérieure (ENS), PSL Research University, Université Sorbonne nouvelle, and USPC.