In Chapter 8 of Brave New World, Bernard asks the savage if he would like to make the return to London with him and Lenina. Having a romanticized perspective about the New World because of how his mother spoke of it, John is thrilled with the idea:
To think it should be coming true--what I've dreamt of all my life..."O wonder!....How many goodly creatures are there here! How beauteous mankind is!...O brave new world!"
John recites lines from The Tempest, lines that will prove ironic as he anticipates a world which is but a figment of his imagination. In the meantime, Lenina, who has been through what she thinks a "horror," takes six half-gramme tablets of soma. While she sleeps, Bernard calls the World Controller's Office in Whitehall; he obtains "the necessary orders" that will be sent to the Warden of the Reservation. Mustapha Mond, the World Controller tells Bernard that he has scientific interest in what Bernard information Bernard has given him.
In light of Bernard's having asked John about accompanying him back to London, it seems reasonable for the reader to assume that Mond's scientific interest relates to John, especially since John's mother Linda has been a resident of the New World. With Bernard's personality being what it is, also, there may be ulterior motives on his part.