This review aims to present the central arguments contained in the recent work of Philip Pettit, prioritizing the concepts he worked in other publications, with special emphasis on the most relevant of them. His work seeks to consolidate a large number of papers produced by him in recent years almost always focused on responses to criticisms of his best-known book, Republicanism. In the book reviewed more then the other there is a much more important institutional aspects of his political theory focusing on the democratic