What is the relevance of the works of Old Russian literature in the 21st century?

The works of Old Russian literature are relevant in the modern world in that they tell the history of the formation of Russia. Many authors of those years wrote about the need to unite the country, because in those days Russia was disunited, each prince sought to strengthen his power. The works of Old Russian literature are relevant in that they remind us of the need for cohesion of the state so that the country remains strong and united.