...

And yet, to say the truth,
reason and love keep little company together nowadays.

William Shakespeare
A Midsummer Night’s Dream
Act III, Scene i



"...I wondered if the creature could be put back together. I doubted it. It was part Bella, too—so it must have inherited some of her vulnerability. I could hear that in the tiny, thrumming beat of its heart.
Its heart was beating. Hers wasn’t.
Only a second had passed as I made these easy decisions.
The trembling was getting tighter and faster. I coiled myself, preparing to spring at the blond vampire and rip the murderous thing from her arms with my teeth.
Rosalie cooed at the creature again, setting the empty metal bottle-thing aside and lifting the creature into the air to nuzzle her face against its cheek.
Perfect. The new position was perfect for my strike. I leaned forward and felt the heat begin to change me while the pull toward the killer grew—it was stronger than I’d ever felt it before, so strong it reminded me of an Alpha’s command, like it would crush me if I didn’t obey.
This time I wanted to obey.
The murderer stared past Rosalie’s shoulder at me, its gaze more focused than any newborn creature’s gaze should be.
Warm brown eyes, the color of milk chocolate—the exact same color that Bella’s had been.
My shaking jerked to a stop; heat flooded through me, stronger than before, but it was a new kind of heat—not a burning.
It was a glowing.
Everything inside me came undone as I stared at the tiny porcelain face of the half-vampire, half-human baby. All the lines that held me to my life were sliced apart in swift cuts, like clipping the strings to a bunch of balloons. Everything that made me who I was—my love for the dead girl upstairs, my love for my father, my loyalty to my new pack, the love for my other brothers, my hatred for my enemies, my home, my name, my self—disconnected from me in that second—snip, snip, snip—and floated up into space.
I was not left drifting. A new string held me where I was.
Not one string, but a million. Not strings, but steel cables. A million steel cables all tying me to one thing—to the very center of the universe.
I could see that now—how the universe swirled around this one point. I’d never seen the symmetry of the universe before, but now it was plain.
The gravity of the earth no longer tied me to the place where I stood.
It was the baby girl in the blond vampire’s arms that held me here now.
Renesmee.
From upstairs, there was a new sound. The only sound that could touch me in this endless instant.
A frantic pounding, a racing beat…
A changing heart."

Book Two: Jacob - Breaking Dawn (Stephenie Meyer)