Wesley: I'm sorry, uh, Lohesh was a four-winged soul killer, am I right? I was given to understand that they're not that fierce. Of all the demons we've faced...
Anya: You've never seen a demon.
Buffy: [Raises hand] Uh, excuse me, killing them professionally four years running.
Anya: All the demons that walk the Earth are tainted, are human hybrids, like vampires. The Ascension means that a human becomes pure demon. They're different.
Giles: Different?
Buffy: How?
Anya: Well, for one thing, they're bigger.

Giles: You actually had your hands on the Books of Ascension?
Willow: Volumes 1 through 5.
Giles: Is there anything that you can remember about them that could be of use to us, anything at all?
Willow: Well, I was in a hurry. Ad, what I did read was kinda involved. If you ask me, way overwritten.
Rupert Giles: Oh.
Willow: Actually, there were a few pages that were kind of interesting, but I didn't have a chance to read them fully.
[Giles looks away]
Willow: [Willow reaches into her pocket and reveals several pages] See what you can make of them?
[Giles takes the papers happily and walks away]

Giles: Feel up to some training?
Buffy: Sure! We can work out after school, you know, if you're not too busy having sex with my mother!

Wesley: And you say this demon wanted cash? That's very unusual.
Giles: Demons after money. Whatever happened to the still-beating heart of a virgin? No one has any standards anymore.

Willow: It's really nice that you guys missed me. Say, you all didn't happen to do a bunch of drugs, did yah?
Xander: Will, we saw you at The Bronze. A vampire.
Willow: I'm not a vampire.
Buffy: You are. I mean you were. Giles, planning on jumping in with an explanation any time soon?
Giles: Well, uh... something... something, um, very strange is happening.
Xander: Can you believe the Watcher's Council let this guy go?

Balthazar: You know what I want.
Giles: If it's for me to scrub those hard-to-reach areas, I'd like to request you kill me now.

Wesley: I have, in fact, faced two vampires myself, under controlled circumstances, of course.
Giles: No danger of finding those here.
Wesley: Vampires?
Giles: Controlled circumstances.

Xander: Listen, do you guys need any help?
Giles: Hmm? Oh, no, no, thank you. Probably best if you stay out of trouble.
Xander: No chance of that.
Jack: Xander! Motor!
Giles: There's something different about this menace, something in the air. The stench of death.
Xander: Yeah, I think it's Bob.

Giles: You have to listen to me. Because I've told you this, the test is invalidated. You will be safe now, I promise you. Now, whatever I have to do to deal with Kralik... and to win back your trust...
Buffy: You stuck a needle in me. You poisoned me.
[Cordelia walks into the library]
Cordelia: What's going on? Oh, God. Is the world ending? I have to research a paper on Bosnia for tomorrow, but if the world's ending, I'm not gonna bother.
Giles: You can't walk home alone, Buffy. It isn't safe.
Buffy: I don't know you.
Cordelia: Did something take her memory? He's Giles. Gi-les. He hangs out here a lot.
Buffy: Cordelia, could you please drive me home?
Cordelia: Of course.
[Cordelia turns to Giles]
Cordelia: But if the world doesn't end, I'm gonna need a note.

Giles: There is a fringe theory held by a few folklorists that some regional stories have actual very literal antecedents.
Buffy: And in some language that's English?
Oz: Fairy tales are real.
Buffy: Hans and Gre- Hansel and Gretel?
Xander: Wait, Hansel and Gretel? Bread crumbs, ovens, gingerbread house?
Giles: Of course, it makes sense now.
Buffy: Yeah, it's all falling into place. Of course that place is nowhere near this place.
Giles: Some demons thrive by fostering hatred and, uh, persecution amongst the mortal animals. Not by destroying men but by watching men destroy each other. Now, they feed us our darkest fear and turn peaceful communities into vigilantes.
Buffy: Hansel and Gretel run home to tell everyone about the mean old witch.
Giles: And then she and, probably, dozens of others are persecuted by a righteous mob. It's happened all throughout history, happened in Salem, not surprisingly.

Giles: We need to save Buffy from Hansel and Gretel.
Cordelia: Now, let's be clear, the brain damage happened before I hit you.

Buffy: She saw these scores and her head spun around and exploded.
Giles: I've been on the Hellmouth too long. That was metaphorical, yes?

Anthony Stewart Head Quotes

Giles: But I assume I don’t have to warn you about the hazards of becoming personally involved with someone who’s unaware of your unique condition?
Buffy: Yeah, yeah. I read the back of the box.
Giles: If your identity as a Slayer is revealed, it could put you and all those around you in grave danger.
Buffy: Well, in that case, I won’t wear my button that says, “I’m a Slayer. Ask me how.”

Buffy: So Giles, got anything that could make this day any worse?
Giles: How about the end of the world?
Buffy: ...I knew I could count on you.