In the introduction, the aims of the book and its general approach are specified. Firstly, the book aims to provide an initial response, in a schematic but hopefully sufficiently articulated form, to a central question that Machiavelli raised in the Discourses on Livy: ‘In what mode a free state, if there is one, can be maintained in corrupt cities; or, if there is not, in what mode to order it.’ Secondly, the introduction takes into account the republican and anti-Medicean key used to read Machiavelli’s works. Thirdly, Machiavelli’s modernity and how it contrasts with the idea that modernity is politically State-centric are highlighted. Finally, the possible actuality of the Machiavellian discourse is specified, and a brief map of the book as a guide to the reader is given.