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.