"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)"
January 1, 1970