This book took shape over many years during which I have been teaching “Prin- ciples of Economics” and “Microeconomics” to undergraduate students. I would like to thank all of my former students for their patience and for their countless discussions that all contributed, in their own ways, to this book. Special thanks are due to my present and former PhD students and research assistants Philipp Den- ter, Magnus Hoffmann, Hendrik Rommeswinkel and Dana Sisak, all of whom had a major influence on the content and the didactics of this book. This is also true for Thomas Beschorner, Friedrich Breyer, Claudia Fichtner, Jürg Furrer, Michael Heumann, Normann Lorenz, Ingo Pies, Alfonso Sousa-Poza and AndreasWagener, who gave me me detailed feedback on earlier versions of the book and helped me with valuable suggestions. I would also like to thank Maya G. Davies, Corinne Knöpfel, Leopold Lerach, Jan Riss and Jan Serwart, who supported me in finishing this book and who did a great job in making it more student friendly and accessi- ble. It is definitely not their fault if you find yourself struggling with some of the materia

这本书形成了多年，在此期间，我一直在教本科生“经济学原理”和“微观经济学”。我要感谢我以前的学生们的耐心和他们无数次的讨论，他们都以自己的方式为这本书做出了贡献。特别感谢我现在和以前的博士生和研究助理Philipp Den-ter、Magnus Hoffmann、Hendrik Rommeswinkel和Dana Sisak，他们对本书的内容和教学法都产生了重大影响。托马斯·贝肖纳、弗里德里希·布雷耶、克劳迪娅·菲什特纳、Jürg Furrer、迈克尔·赫曼、诺曼·洛伦兹、英戈·皮斯、阿方索·索萨·波扎和安德烈亚斯瓦格纳也是如此，他给了我关于本书早期版本的详细反馈，并帮助我提出了宝贵的建议。我还要感谢玛雅·G·戴维斯、科琳娜·克诺普费尔、利奥波德·莱拉克、简·里斯和扬·瑟瓦特，他们支持我完成了这本书，并在使本书更适合学生阅读方面做了出色的工作。如果你发现自己在与某些材料作斗争，那绝对不是他们的错