Speaking of The Path of Dragons, Message From A Stranger

Izroth saw no reason to deceive Kayn, however, there were still too many unknowns. Not to mention, who knew what kind of chaos it would cause if information escaped that he had a page to the Book of Beginnings in his possession? Izroth understood that with his current strength, it was impossible to fend off beings in the legendary realm. Therefore, until he had enough power to protect himself, he believed it would be best to keep this information as concealed as possible.

However, Izroth did not know if Kayn would understand if he simply said that a quest told him about it. With that in mind, Izroth explained that he heard rumors about it and seen it written in some books about old legends in the Amaharpe palace library. While this was true, of course, he withheld some of the more important details, such as it having to do with his quest.