So you're her brother? Says Linn. I guess we know who got the good genes.

You're too important to just... die.

Tris.” I keep staring. “Tris.” I finally look at him. “I just don’t want to lose you.

Nothing else is all right.” His whisper tickles my cheek. “But we are.

It doesn't prove anything except that you're bullying us. Which, as I recall, is a sign of cowardice.

My body rises with the water. Instead of kicking my feet to stay abreast of it, I push all the air from my lungs and sink to the bottom. The water muffles my ears. I feel its movement over my face. I think about snorting the water into my lungs so it kills me faster, but I can't bring myself to do it. I blow bubbles from my mouth. Relax. I close my eyes. My lungs burn.

That is death - shifting from "is" to "was.