Are you looking for quotes about the civilization that the boys left behind or the civilization that developed on the island?
The chapter begins with a description of the rhythm of the days that developed, largely based on the movement of the sun across the sky and how the heat and shadows changed and affected activities on the island. A pattern of playing, eating and sleeping developed in response to the conditions they found on the island, but "the northern European tradition of work, play, and food right through the day, made in impossible for them to adjust themselves wholly to this new rhythm."
The differences in behavior patterns are highlighted. While the boys remembered disciplinary expectations from their past, the reality on the island was more self-centered.
In his other life Maurice had received chastisement for filling a younger eye with sand. Now, though there was no parent to let fall a heavy hand, Maurice still felt the unease of wrongdoing. At the back of his mind formed the uncertain outlines of an excuse. He muttered something about a swim and broke into a trot.
Yet, there were still boundaries, at least at this stage of their time on the island.
Roger gathered a handful of stones and began to throw them. Yet there was a space round Henry, perhaps sex yards in diameter, into which he dare not throw...Roger's arm was conditioned by a civilization that knew nothing of him and was in ruins.
How quickly things changed. Jack discovered a whole new way of looking at life in
memories of the knowledge that had come to them when they closed in on the struggling pig, knowledge that they had outwitted aliving thinng, imposed their will upon it, tken away its life like a long satisfying drink.