Forbidden Knowledge

Mainquest1 Icon.png Lv. 59   Forbidden Knowledge

Journal detail hr1 07.png Acquisition
Matoya: Matoya's Cave (Zone) (x:6.5, y:6.4)

Map33 Icon.pngClosest Aetheryte: Idyllshire Aetheryte Plaza → Prologue Gate

Journal detail hr1 08.png Requirements
071201.png59Matoya's CaveMainquest1 Icon.png Matoya's Cave (Level 59)

Spacer2.png Any Disciple of War or Magic (excluding limited jobs) (Level 59)

Journal detail hr1 03.png Rewards

Experience Points

Aether Current
Miscellaneous Reward

Dungeon Icon.png The Great Gubal Library (Level 59)

Edit Forbidden Knowledge's Miscellaneous Reward
Journal detail hr1 04.png Description
Matoya is in a mood to reminisce.
Journal detail hr1 01.png Objectives
  • Speak with Matoya.
  • Speak with the enchanted broom.
  • Speak with Broomsy at the Great Gubal Library.
  • Enter the Great Gubal Library.
  • Deliver the tome to Matoya.
Journal detail hr1 02.png Unlocks Quests
071201.png59An Eye for AetherMainquest1 Icon.png An Eye for Aether (Level 59)

Journal detail hr1 08.png Items Involved
On Aetheric Convergence
Journal detail hr1 07.png NPCs Involved
MatoyaAlphinaudY'shtolaEnchanted BroomBroomsy

  • Matoya is in a mood to reminisce.
  • Matoya shares with you the tale of her work on a device known as an aetheric converger, and how it led to a bitter falling-out between her and her peers. The fruits of her research were apparently compiled within a tome which now lies sealed within the Great Gubal Library, and you must overcome the dangers within if you wish to retrieve it. Ask Matoya for further instructions.
  • Matoya loans you one of her servants to guide you to the Great Library and unlock its long-sealed doors. Make yourself known to this servant─a broom.
  • Having introduced himself as Broomsy, the surprisingly eloquent sweeping implement furnishes you with directions to the Great Library. Upon leaving Matoya's Cave, you are to make your way east; the library building will come into view upon gaining the collapsed bridge. Speak with Broomsy when you arrive, and he will unlock the door for you.
  • The Great Gubal Library is ready to receive its first visitors in fifteen years. Brave the dangers within and retrieve Matoya's tome.
※The Great Gubal Library can be accessed via the Duty Finder.
  • You have survived the trials within the Great Gubal Library. Make your way back to the outside world.
  • Upon defeating the library's final guardian, the Crystal of Water regains the power of the Light. Soon after, you find what you can only assume is Matoya's tome on the aetheric converger. Bear the book back to Matoya, who awaits you within her cave.
  • Matoya confirms that you have retrieved the correct tome. All that remains is to put the knowledge it contains to use.

Do you see the tomes lying about like so many cheap romances? They are priceless. My professors at the Studium would have fits if they saw them in this state.
Being here calls to mind my days studying under Matoya. Though she was the strictest─and most irascible─of mentors, she led by example and inspired one to greater heights. Were it not for her sage guidance, I should not be the woman I am.
Ereh ees ot gnihton. Swish-swish-aroo!
Player7 Icon.png Voiced cutscene start.
'Twas some fifty years ago, shortly after Garlemald had brought all of Ilsabard under its rule.
Faced with the threat of invasion, the people of Sharlayan scrambled about for a means to resist the Empire. For my part, I was tasked with developing an aetheric converger.
Ah, yes, a device which draws in aether and concentrates it to produce a destructive force.
But as my research neared its end, it was denounced by the Forum, who claimed that my device was more likely to destroy us than our enemies.
After that, they and I had a little falling-out, and I decided to seal away all the fruits of my research, lest the dunderheaded ingrates reap any benefit. Petty, I know, but gods, it was satisfying!
Do mine ears deceive? 'Twas you, was it not, who was so fond of saying that all knowledge exists to advance mankind? That how it is used depends on us?
I don't remember. Perhaps. All right, yes, that was a pet phrase of mine. And that should give you a notion of how sick and tired I was of those spineless wretches of the Forum. All talk and no trousers, that lot. That's why I decided to remain behind rather than join the exodus.
You may have had your disagreements with my grandfather, but upon that point, your minds were as one.
With respect, Master─the fruits of your research should not be left to spoil. Will you share with us the secrets of the aetheric converger?
Aye, I will. All the information you need is contained in a tome I wrote on the subject. But you'll have to fetch it from the forbidden section of the Great Library.
You were not exaggerating when you said that you had sealed it away. Though the city is abandoned, the library's guardians are all but certain to remain. We must needs cut a path through them. Come─let us away.
Not so fast! You don't expect that you can just waltz on in, now, do you?
Player7 Icon.png Voiced cutscene end.
Quest Accepted

Oh, the Great Library's guardians shouldn't pose any difficulty for a hero like you.

But if it turns out you aren't up to the task... Well, then I'll know you can't be trusted with something as dangerous as an aetheric ram.

The other's that broom yonder, who'll let you into the library. ...Well? What are you waiting for? Introduce yourself, boy!

Are you going to introduce yourself to that broom or not? No skin off my nose if you don't.
Among other things, Master Matoya is an authority in familiars. After we have tended to our task, perhaps I shall beg her for some insights on the subject...

The Great Library was more than just a repository for tomes; it also served as a center of research for countless fields of study.

Fields such as the development of arcane entities, the fruits of which were employed as the library's sentinels. We must be ever on our guard.
Player7 Icon.png Cutscene start.

Greetings, good sir. I am Broomsy, my lady's servant of some fifty years. May I say what an honor it is to serve you!

I am given to understand you wish to enter the Great Gubal Library. To find it, pray head east upon leaving this cave. The building will come into view shortly after you reach the collapsed bridge.

I shall go and fetch my fellow familiar on my way to the entrance. When your preparations are in order, pray come and meet me there. It will be my pleasure to unlock the door for you.
Player7 Icon.png Cutscene end.
What are you loitering around here for? Hurry up and fetch that book!
The Great Gubal library... Whatever the reason, it boggles my mind to think that such a great repository of knowledge could be abandoned.
As a child, I would often come here. Not only on Master Matoya's errands, but for my own research besides.
I am Pero Roggo, ribbit, and it shall be my pleasure to guide you in the library.

You stand before the Great Gubal Library, one of Hydaelyn's foremost repositories of knowledge.

Alas, it has fallen into disuse since the exodus some summers since. In all those years, its halls have welcomed not the coming of a single soul─its floors felt not the loving brush of a broom...

M-Mine apologies, sir! Pray pay no mind to the dreams of a humble broom. You are doubtless eager to venture within and retrieve my lady's tome. I shall unlock the door at once. When you have what you seek, pray return to the cave and report to my lady.

I wish you good fortune in your search. When you have what you seek, pray return to the cave and report to my lady.
Duty Commenced
Duty Complete
Player7 Icon.png Voiced cutscene start.

So this is the tome. Excellent.

Let us take it to Master Matoya at once.
Player7 Icon.png Voiced cutscene end.
Ahem... Despite how it may have sounded, I do not exaggerate when I say it was a tremendous learning experience to observe one of Master Matoya's familiars. The insights I acquired, I shall put to good use.
As expected, the library was rife with dangers, but full glad I am that I could accompany you.

I take it you found the tome. Well, let's see it, then.

Aye, this is it all right...
I must say, the experience brought back memories. Just like the old days, you still send people into the thick of danger as if it were nothing more than a mundane errand.

But we were able to accomplish our task thanks to Pero Roggo. He is an eminently capable familiar─a creation worthy of the great Master Matoya─and to simply witness him in action gave me a better understanding of arcane entities.

Should the opportunity present itself, I should very much like to employ this knowledge for the betterment of mankind─create a new variety of Carbuncle, perhaps...
Don't get ahead of yourself, boy. Louisoix's grandson or no, it'll take another decade under me before you can call yourself a scholar, and a deal more than that to make you a scholar worth a damn.
As you may have gathered, Master Matoya is not easily impressed.
...Indeed. Ahem. So, shall we examine the tome?
Quest Complete
Edit Forbidden Knowledge's Dialogue

Matoya's dialog in the cutscene was slightly changed in 5.3. Before the 5.3 change, Matoya did not allow Y'shtola and Alphinaud to accompany the WoL, putting them to work in the cave instead. After the change, she makes no such demand.
Old line: "Not so fast, you lot! Shtola and the boy are staying with me. I need help to make new sentinels to replace the old ones you walloped. There'll be board and lodging, don't you worry, but know that you'll have to work for them. Hard. I'll have no sluggards in my house!"
New line: "Not so fast! You don't expect that you can just waltz on in, now, do you?"
The new line is voiced. Since Sheila Steafel, Matoya's original voice actress, died in 2019, this line was either recorded by someone else, or it was recorded but not included during Heavensward's production in 2015.
Edit Forbidden Knowledge's Miscellaneous Reward

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