I need quotes with metaphors in them.

Do you mean any quotes in the book with metaphors? They are all over the place.

"The beach between the palm terrace and the water was a thin stick..."

"Then the creature stepped from mirage on to clear sand, and they saw that the darkness was not all shadow but mostly clothing."

“The creature was a party of boys."

"The beast was on its knees in the center, its arms folded over its face. It was crying out against the abominable noise something about a body on the hill."

Look for a quote in the book about piggy’s glasses as they are a metaphor for science. Also you could look for a quote about piggy himself because he represents the metaphor for rational thinking.