I think that every generation of people goes through the same challenges, as if without evolving. We all experience breakups, marriages, path choices, disasters, miracles. We go through the same lessons. What if there was such a library of close wisdom that collected life lessons of several generations. People who have lived longer than us, who live next to us, and who have already left us, would leave their message.
The most important thing - that is important to know for everyone who lives on earth. The lesson of earthly life.