He sighed, but patiently explained, "Why keep anything worth knowing except to remember? Knowledge is power, even mortal knowledge. Even incomplete knowledge, or that lost to history. If we immortals keep the record, it can never truly be expunged. Every piece I collect remains beyond reach—beyond  revision—by those who wish to write the story only  they  want told. And while mortal mythology leaves much to be desired, there is more truth of the history of the realms within those depths than you know."