How we cite our quotes: (Record.Paragraph)
Quote #4
From beyond the Wall, from the infinite ocean of green, there arose toward me an immense wave of roots, branches, flowers, leaves. It rose higher and higher. (16.3)
The natural world is shown as something immense and powerful here, perhaps more powerful than the State. Is that the only way D-503 can shift his sense of self: by trading one immense organization for another?
Quote #5
Beyond the Wall, the sharp black triangles of some birds; they would rush, cawing, in onslaught on the invisible fence of electric waves, and as they felt the electricity against their breasts, they would recoil and soar once more beyond the Wall. (21.3)
The suggestion here is that the conflict between the State (order) and Nature (chaos) has always been going on. The birds have always been trying to fly over the Wall. This is just the first time D-503 has noticed it.
Quote #6
Through the glass—foggy and dim—I saw the stupid muzzle of some kind of beast, his yellow eyes, obstinately repeating one and the same incomprehensible thought at me. We looked at each other for a long time, eye to eye, through the mineshafts from the surface world to that other world, beyond the surface. But a thought swarmed in me: what if he, this yellow-eyed being—in his ridiculous, dirty bundle of trees, in his uncalculated life—is happier than us? (17.5)
The natural world makes one of D-503's deepest fears manifest here: not only of life beyond the State, but life that may actually be happier because of it. This is part of why he grapples so much between his old State-dictated beliefs and his new embrace of the natural world.