Catherine: You're going to enter this as a homicide, right?
Doc Robbins: Technically, it's somewhere between accidental and undetermined.
Catherine: It's a homicide. I'm going to get your proof. So write down that "accidental" in pencil.

Catherine: You're racing me Nick. We're driving the same car.

Catherine: You're racing me, Nick. We're driving the same car. (Nick keeps walking down the hallway) Nick! (he keeps walking) Nick, I'll have you removed from the case. You're confronting suspects before the evidence is processed. You're flying solo, cutting me out. What's going on?
Nick: (takes a deep breath) Okay. There are some people you're supposed to be able to trust, you know? I was nine. And she was a last-minute baby-sitter. (Catherine's stunned) All I can remember doing afterwards is sitting in my room in the dark, staring at the door waiting for my mom to get home. But I've never told anyone before.
Catherine: I'm sorry.
Nick: It's what makes a person, I guess. I'm sorry, Catherine.

Catherine: [to Nick] Remember, if you get stuck just maintain the same posture. If there's any adjustments, you're seen as squirming. It's going to make you look shifty.
Nick: Thanks, Cath. You know, I've done this before.
Catherine: Well, I've done it longer.

Catherine:(About a bone that was found in the desert) Well, it is a leg bone and my guess is that it didn't walk out here by itself.
Grissom: It could have been a hiker who got lost. It's interesting to me how you always expect the worst.
Catherine: You see, that way I'm never disappointed. And sometimes I'm nicely surprised. So, is this a crime scene?
Grissom: Potential crime scene. Did you know there are 206 bones in the human body?
Catherine: Yes professor. I, too, took osteology.
Grissom: Well, 205 more bones and we have a complete skelton. If we find the rest then we can determine if or if not it was a murder.
Catherine: Well, I feel it in everyone of my 206 bones that this was a murder.

Chandra Moore: Warrick, right?
Warrick: Yeah.
Chandra Moore: I saw your presentation on longitudinal striations of the toenail in Dallas, A.A.F.S.? Really good work.
Warrick: Thank you. Thank you so much. And you are?
Chandra Moore: Oh, I'm Chandra. Chandra Moore. I'm the new DNA person.
Greg: Well, that's the plan anyway.

Clyde: Look, everyone tries to get an edge in this business. I use jokes.
Warrick (hangs up the phone): Fred Sterns just passed away. Again.
Grissom: Dead guy. Not funny.

Construction Worker: Trade you a hammer for a screw.
Sara: Name please.
Construction worker: Tell you mine, you tell me yours. Uh, come on baby, stuck with these ugly fools all day, pretty girl comes by, just having a little fun.
Sara: Yeah, a murder always makes me feel a little randy too.

Dancer: Hi. Do you need a hand with that?
Grissom: Uh... no, thanks. I'll be fine.
Dancer: Are you a doctor?
Grissom: Of sorts. I'm just, um... looking around.
Dancer: See anything you like?
'Grissom: Yes. I do. (he picks up a music box, the dancer walks away)
Grissom: Catherine? (he opens the box and it play music) Tchaikovsky's "Waltz of the Flowers". (he looks underneath the music box and grins)
Catherine: What? Why are you smiling?
'Grissom: It's playing our song.

Daniel (to Grissom): I didn't realize until... today... how lucky I am. I know pretty much... how and when I'm gonna die. Most people don't. It's what they're afraid of.
Grissom: Was your sister afraid?
Daniel: Never. I'm 11 years older than her, and she took care of me. She was my best friend, and I miss her. As much pain as...I caused her... and she wouldn't give up, and she...she wouldn't let me, either. That's why...during the last relapse, I made my parents swear that it was the very last time.
Grissom: But then your kidneys failed, and they broke their word, huh?
Daniel: They told me they... swore not to fight the cancer, so this didn't count. I wasn't gonna lose this fight. I couldn't watch her suffer anymore.
Grissom: This wasn't a mercy killing, Daniel. This was an execution. Bone marrow, transfusions...that's her blood in your veins. It dripped out of your nose onto the blanket while you were killing her. If you cared so much for Alicia, why didn't you take your own life instead of hers?
Daniel: Suicide isn't an option. It's an unforgivable sin in the eyes of God.
Grissom: But you believe that your god forgives murder? If that's your defense, it won't keep you out of jail.
Daniel (crying): But my death will. See, I've got about six more months. I'll be dead before there's even a trial. I-I do want to thank you, though.
Grissom: For what?
Daniel: For speaking for Alicia. You're probably the first person in her life to think only of her. You know, you may not believe in God, sir, but you do his work.

David [to Greg]: So, how was your run?
Greg: I'm still alive.

David: From the sound of it, I'd say he's been dead about two months.
Sara: Sound? (David shakes the bag, liquid sloshes around inside it)

David: I hate when you CSI guys get territorial.
Catherine: Yeah well the victim's family hate it when we don't.

David: It's like the Red Sea in here.
Grissom: The Red Sea's not red, David.
David: No, it's blue from afar and transparent when held in hand, like any other body of water. I was just speaking figuratively.

Detective Cavalier: Electrocution. That's a quick way to go.
Warrick: Not always.