This book is the pinnacle work of Machiavelli, a famous statesman and philosopher during the Italian Renaissance. Many of the views in the book have been controversial since its publication, and have also had a huge impact. The world also has mixed opinions about the author himself. Those who hate him denounce him as "the mentor of tyrants", while those who love him respect him as "the theoretical pioneer of nationalist countries" and "the originator of modern political science". In this book, the author expresses shocking views, which may seem undesirable today, but their essence can be critically absorbed. In order to facilitate readers' reading and understanding, the translation of this book maintains the style of the original work, and the language is more popular and concise, striving to help readers understand the essence of the book more deeply.