“Life comes from death, and weakness teaches us strength.”

“Your life is defined by death, and each time you face it you grow stronger. You learn more, and feel more. It sounds stupid to say it like this, but not dying makes you more alive.”

“Feelings aren't good or bad. They're just weak or strong. Love, for example, is weak: someone loves you, you love them back, you're happy for a while, and then it fades away. But if one of those lovers betrays the other, then you have a real emotion - then you have something powerful, something that leaves a mark you'll never be rid of. Betrayal is the most delicious of all, but it takes a while to set it up, and fear can be just as intense if you know what you're doing.”

“Each life has a different purpose, and some people can find their purpose more easily than others. The key, the most important thing you can ever know, is that whatever your purpose is, that's not your only choice""No matter why you're here, no matter why any of us are here, you're never tied down to fate. You're never locked in. You make your own choices, Kira, and you can't let anyone ever take that away from you.”

“Humans aren't defined by death, and they're not defined by what they lack. They're defined by their connections.”

“I'm the demonslayer. Come and get me.”

“This was the thing that terrified me the most - more than the victim, more than the demon, more even than the dark thoughts. It was the fact that the dark thoughts were mine. That I couldn't separate myself from evil, because most of the evil in my life came from inside my own head.How long could I live like this? I was trying to be two people - a killer on the inside, and a normal person on the outside. I made such a show of being a good, quiet kid, who never caused problem and never got into trouble, but now the monster was out, and I was actually using him - I was actively seeking out another killer. I'd given in. I was trying to be John and Mr. Monster at the same time.Was I fooling myself, thinking that I could split my life like this? Was it possible to be two people, one good and one bad, or was I forced to be a mix of both - a good person forever tainted by evil?”