what point does Ralph make at the meeting? what general point does he make that he wants people to discuss? why are theses points so important or significant?

He begins the assembly seriously, telling them that they are there not for making jokes or for cleverness. He reminds them that everyone built the first shelter, which is the most sturdy, while the third one, built only by Simon and Ralph, is unstable. He admonishes them for not using the appropriate areas for the lavatory. He also reminds them that the fire is the most important thing on the island, for it is their means of escape. He claims that they ought to die before they let the fire out. He directs this at the hunters in particular. He repeats the rule that the only place where they will have a fire is on the mountain. Addressing the spreading fear among the littluns, Ralph then attempts to demystify the question of the "beastie" or monster. He admits that he is frightened himself, but their fear is unfounded. Ralph again assures the group that there are no monsters on the island. Ralph has to establish is authority one last time. He is losing both power and credibility to Jack. If he fails to get through to the boys, they will join Jack and that would be the end of any semblance of civilization on the island.