Quote 28
The Savage shook his head. "He wouldn't let me […]. He said he wanted to go on with the experiment. But I'm damned," the Savage added, with sudden fury, "I'm damned if I'll go on being experimented with. Not for all the Controllers in the world. l shall go away to-morrow too." (18.25-7)
John is free from Mustapha's control because he chooses to be. He reminds us that, in fact, any citizen in the World State could leave at any time. (Although, if they've been conditioned not to want to leave, we have to ask if freedom is preemptively made impossible.)
Quote 29
"But all the same," insisted the Savage, "it is natural to believe in God when you're alone—quite alone, in the night, thinking about death…"
"But people never are alone now," said Mustapha Mond. "We make them hate solitude; and we arrange their lives so that it's almost impossible for them ever to have it."
The Savage nodded gloomily. At Malpais he had suffered because they had shut him out from the communal activities of the pueblo, in civilized London he was suffering because he could never escape from those communal activities, never be quietly alone. (17.31-3)
Which does John find worse—the state of constant isolation, or that of forced social interaction?
Quote 30
"What's in those" (remembering The Merchant of Venice) "those caskets?" the Savage enquired when Bernard had rejoined him.
"The day's soma ration," Bernard answered rather indistinctly; for he was masticating a piece of Benito Hoover's chewing-gum. "They get it after their work's over. Four half-gramme tablets. Six on Saturdays." (11.75-6)
We see the same thing here; the gum that Bernard is chewing made its first appearance in Chapter 3, when Benito was offering it to a disgruntled (and very different) Bernard.