I am grateful to Nomos Verlagsgesellschaft and to Franz Steiner Verlag for permission to include material from the following chapters of my own work: ‘Verwaltungsrechtsraum Europa – Zur Mo¨glichkeit seiner rechtswissenschaftlichen Erschlie?ung’, in: Debus et al. (eds.). Verwaltungsrechtsraum Europa, Baden- Baden: Nomos, pp. 9–31 and ‘Rechtserzeugung als performativer Vorgang in der Sprache’, in: Ba¨cker, Carsten/Ziemann, Sascha (eds.). Junge Rechtsphilsophie. Archiv fu¨r Rechts- und Sozialphilosophie, Beiheft 135, Stuttgart: Franz Steiner, pp. 117–126. Several colleagues and friends have generously given their time and have read and commented on earlier versions of this research. I wish to thank all those who contributed in one way or another to the completion of this book, but in particular: Anja Breljak, Jochen Bung, Felix Creutzig, Thomas Hilgers, Anna-Bettina Kaiser, Ann-Katrin Kaufhold, Jan Philipp Kruse, Isabelle Ley, Anna Katharina Mangold, Nora Markard, Christoph Mo¨llers, Reut Yael Paz, Cathrin Romeis, Franziska Schulte Ostermann, Ralf Seinecke, Chris Thomale, Luise Tremel, Tim Wihl, and Benjamin Wihstutz.