The book "Correspondence of Voltaire with the King of Prussia" is a unique example of the correspondence between the outstanding philosopher and writer Voltaire and King Frederick II. This dialogic heritage allows the reader to better understand the relationship between philosophical views and actions in the practice of government. The letters are selected from the large volume of correspondence exchanged between these two prominent figures of their time. Their thoughts, discussions of political issues, and philosophical reflections make this book a valuable document for those interested in the history and ideas of the Enlightenment.