How we cite our quotes: Citations follow this format: (Chapter.Part.Paragraph)
Quote #10
"You're more like what you were at Malpais," he said, when Bernard had told him his plaintive story. "Do you remember when we first talked together? Outside the little house. You're like what you were then."
"Because I'm unhappy again; that's why."
"Well, I'd rather be unhappy than have the sort of false, lying happiness you were having here." (12.45-7)
John is dissatisfied with the same aspects of the World State that bothered Bernard in earlier chapters. In this way, John effectively replaces Bernard as the novel's protagonist.
Quote #11
"I know. But I thought I'd like to see what the effect would be."
"Well, you've seen now."
Helmholtz only laughed. "I feel," he said, after a silence, "as though I were just beginning to have something to write about. As though I were beginning to be able to use that power I feel I've got inside me —that extra, latent power. Something seems to be coming to me." In spite of all his troubles, he seemed, Bernard thought, profoundly happy. (12.59-61)
Once he starts down this road of rebellion, Helmholtz never turns back—unlike Bernard. He is able to laugh off any threats of punishment or consequence (like island deportation) because he realizes the "sacrifice" of leaving the World State isn't actually a sacrifice.
Quote #12
Helmholtz and the Savage took to one another at once. So cordially indeed that Bernard felt a sharp pang of jealousy. In all these weeks he had never come to so close an intimacy with the Savage as Helmholtz immediately achieved. Watching them, listening to their talk, he found himself sometimes resentfully wishing that he had never brought them together. He was ashamed of his jealousy and alternately made efforts of will and took soma to keep himself from feeling it. But the efforts were not very successful; and between the soma-holidays there were, of necessity, intervals. The odious sentiment kept on returning. (12.61)
So, basically, Bernard is always dissatisfied with something. Something petty.