[Belth tries to gather himself. As Hiro brushes his fingers across the book, he whispers a spell.]

Ban'dinor medivh, anar'orah Hiro baise.

[The runes glow red briefly, then go back to blue.]

That journal will only open when you touch it. That way no one else can see your thoughts or your ideas unless you want them to. [He tucks a bit of hair behind his ear.] It is important to have your own space for privacy, but that is difficult on a very small ship.

I... hope this helps.