Light quotes from Death Note

Light

At first I wrote the names of the worst criminals I could think of, like I was cleaning up the world one name at a time, so that eventually no one will ever do anything evil again. And while the truly guilty ones who deserve to be punished for their crimes die of heart attacks, the people who are less guilty but who still make trouble for others will slowly be erased through disease and accidental death. Then and only then the world will start moving in the right direction. It'll be new world free of injustice and populated by people who I've judged to be honest, kind, and hardworking.

Ryuk: But if you did that, it'd make you the only bad person left.

Light: Huh? I have no idea what you're talking about. I'm a hardworking honor student who's considered to be one of Japan's best and brightest. And I... I will become the God of this new world.

Ryuk: It's just as I thought.. Humans are so interesting. (Ep. 1)

Light

Kira, deaths by accident, by disease, designated times of death, it's all just as we suspected. We were right.

L: No, unfortunately, we can only be completely sure after those people they've named are dead. We will continue to monitor these meetings and take note of what they say, how they act, and most importantly whether the people they choose actually die. If we can confirm the connection between their plans and the deaths, then we'll definitely be able to catch Kira.

Light (in unison with Chief Yagami): Ryūzaki!

L (with his mouth full): What is it? There is no need to yell in unison.

Light: I can't carry on knowing these people will die. That's just immoral. (Ep. 20)

Light

Ryūzaki. Do you think that I'm actually capable of becoming a murderer, Kira? Even after I help you catch him, do I seem like that kind of person to you?

L: Yes, you do. I've always thought so. (Ep. 20)