Good vs. Evil Quotes in New Moon

How we cite our quotes: (chapter.paragraph)

Quote #7

"I almost ripped his face off. My own father." (15.25)

Apparently, Jacob’s temper during his transformation remains unaffected by close emotional ties. He’ll attack whoever happens to nearby. Maybe the moral here is: anger turns humans into animals?

Quote #8

I thought of him… with the same golden eyes that the… Cullens… had. That all good vampires had… his curious, dark red eyes followed… (10.100-102)

Bella distinguishes good and bad vampires by the color of their eyes.

Quote #9

[Alice to Bella:] "Over the millennia [the Volturi] have assumed the position of enforcing the rules." (19.43)

Alice explains that the Volturi keep the vampire world in check. Could their enforcement of certain rules be considered "good"?