Columbo, Season Seven

Lt. Columbo:
[to group of murder mystery fans] I like my job. Oh, I like it a lot. And I'm not depressed by it. And I don't think the world is full of criminals and full of murderers because it isn't. It's full of nice people just like you. And if it wasn't for my job I wouldn't be getting to meet you like this. And I'll tell you something else. Even with some of the murderers that I meet, I even like them too. Sometimes like them and even respect them. Not for what they did, certainly not for that. But for that part of them which is intelligent or funny or just nice. Because there's niceness in everyone. A little bit anyhow. You can take a cop's word for it.