Quote 13
Ralph pushed Piggy to one side.
"I was chief, and you were going to do what I said." (4.132-133)
Uh oh. This is basically the equivalent of Ralph saying, "But it's not fair." If you have a sibling, you know how well that works. (Not at all.)
Quote 14
Something deep in Ralph spoke for him.
"I'm chief. I'll go. Don't argue." (6.155)
Notice that Ralph isn't the one agreeing to go look for the beast; it's the chief inside of him. He's a good example of how power can actually make you better. If you know you have people depending on you, and if you take that responsibility seriously, then power can be a positive force.
Quote 15
"Then we must go as we are," said Ralph, "and they won't be any better." Eric made a detaining gesture.
"But they'll be painted! You know how it is."
The others nodded. They understood only too well the liberation into savagery that the concealing paint brought. (11.63-66)
Check out Golding's almost paradoxical use of "liberation" and "concealing." The paint does both: it liberates the boys by concealing their identities. If you know you won't be recognized, you're a lot more likely to be a total jerk. (Just ask anonymous Internet trolls.)