This particular document has two different versions. One appears in the bookshelf, while this version appears in the in-game dialogue during the quest.

To Treasure Hunters: (I)

Ah hoo! You've been fooled!
Actually, there is no treasure at all.
The only big gifts are my four graffiti drafts hidden in this room. And yes, there is also a nice picture of our respected Madam Herta. You didn't expect this, did you?
If you are a devout little researcher, take a deep breath! Don't get a heart attack!
If you are a fun-loving young person, I suggest you collect them all. Take them out when life, and have some fun while studying in the dark tower.

Laughing Hosea Lazaro

To Treasure Hunters: (II)

Alright, if you can see this, it means you have followed my advice and that you possess the precious virtue of perseverance.
I must admit, you've gone such a long way. If I don't give you something, it'll be a little mean.
After all, I don't know who'd be looking for my treasure after so many Amber Eras.
There is a slim chance that maybe you are my future champion, my spiritual successor.
Wouldn't it be a pity if I accidentally hurt my friends?
Seems like there's no other way. I have to show you the real treasure now.

Your Respected Hosea Lazaro