This book offers a conceptual map of Habermas’ philosophy and a systematic introduction to his work. It does so by systematically examining six defining themes—modernity, discourse ethics, truth and justice, public law and constitutional democracy, cosmopolitanism, and toleration—of Habermas' philosophy as well as their inner logic. The text distinguishes itself in content and perspective by offering a very clear conceptual map and by providing a new interpretation of Habermas’ views in light of his overarching system. In terms of scope, the book touches upon Habermas’ broad range of works. As for method, the text illustrates key concepts in his philosophy making it a useful reference aid. It appeals to students and scholars in the field looking for a current introductory text or supplementary reading on Habermas.