EDWARD
The Volturi are a very old, very powerful family. I guess, the closest thing to royalty
my world has.

BELLA
Is that Carlisle?

EDWARD
Yeah. He lived with them for a few decades. Described them as very refined. No respect for human life, of course, but ...respect for the arts and science as at least. And the law ...above all of law.
[ From: http://www.elyrics.net ]

BELLA
And vampires have laws?

EDWARD
Not very many. There's only one and it's regularly enforced.

BELLA
What is it?

EDWARD
To keep the existence of our kind a secret. We don't make spectacles of ourselves, and we don't kill conspicuously. Unless, of course, you want to die.