This book presents the first single-volume overview of twentieth-century German political thought, emphasizing its diversity and contested nature. Structured chronologically, the book covers a wide range of theorists. Topics include the nature of politics; collective identity; the rule of law; the role of the state; the role of political parties and the nature of parliamentary democracy; state intervention in society and the economy; and the international order. There is also a glossary of German terms and substantial biographical notes identifying major theorists.