This scroll came to Sara's hands from her mother. And so, William knew the real start of unravelling all this was in the hands of the missing Sara's mother.
Even if he deciphered the scroll, managed to read it, he wouldn't get satisfied. He wanted to dig deeper, get to the bottom of such a weird mystery and learn how come such weird language was here.
He wanted to know everything about the origin of this language, and more above anything about how it wasn't known in the outer world.
It was the first time for him to stumble over something in the tiny world here that wasn't present or known in the outer world.
He got used to the opposite kind of situation. And meeting such an anomaly stirred up his desire to know the truth.
"I'll have to put this aside for now," William knew thinking about this any longer wouldn't help. Besides, he already had other matters to care about at this moment.