Jayce searches the library and asks if there is any written copy of the legend of the Heart of Gold.
(Note: I read about it possibly existing within Morty's Golem and Constructs book)
Be famous or important? Heh, I'm hardly able to even be remembered. So live in the moments you are given. They may never happen again.
That reference is the only one found within the library.
In the future, there are two simple rules to remember:
DO NOT CROSS MISTER MOLOCH.