What makes classical works valuable is that they illuminate the history of debates about human existence and destiny. Many issues we discuss today, which we consider relatively specific to modern humanity, have actually been discussed and resolved in specific ways by great thinkers throughout history. Topics such as good and evil, human will, the march of history, and the relationship between man and God are not just topics discussed by modern people; very early on, humanity developed fundamental views on these issues that we perhaps still haven't moved beyond today, and we still learn a great deal from them. Perhaps this is why the Latin saying "The dead teach the living about life" is not said in vain.