[He recognizes her journal as something that was with him when things changed as well and his surprise shows, drawing out his own to compare. Yup, the same.]
Then the books are connected? I see, that's... incredible. [All of this is, in a way that's almost too overwhelming to think about much more in depth. Which really, he can't help but do.] So the fact that the people here come from different places, that we can understand each other- it's all done by the same force.