Acknowledgments
I would like to thank my collaborators for their contributions to this volume. I am also grateful to Hilary Gaskin for her guidance and support for this project and Katie Brennan for helping me proofread the book manuscript for accuracy and consistency of reference. I would also like to thank the Center for Advanced Studies of Ludwig-Maximilian University Munich for the fellowship support in relation to this project and the Schelling-Kommission of the Bavarian Academy of Sciences for resources.