Faina Grimberg’s book “The Rurikovichs or the Seven Centenary of “Eternal” Questions” is intended for a wide range of readers and at the same time is a necessary guide for teachers, students and high school students who want to think independently and non-trivially. What is aristocracy? How did military affairs develop in Ancient Rus'? Who are Boris and Gleb? When was “The Tale of Igor’s Campaign” written - in the 12th or 18th century? How to rationally explain the character and actions of Ivan the Terrible? Here is just a short list of questions posed on the pages of this book.