[icebraining]

"Now you must work. You must return to your engine. I will be waiting for you here. Come back tomorrow evening . . ."

(...)

"I am glad that you have found what was the matter with your engine," he said. "Now you can go back home--"

[chattoraj]

Thanks for pointing these out. Looks like I need to reread the book.

[johnchristopher]

Could you please elaborate on how the quoted passages establish the distinction between grown-up and adult ? It might be the language barrier but I am not getting the point.