Weil: You haven't done enough muck-raking for one day?
Ria: Sir. We don't think you were doing anything sexual at that club, because, I believe this escort, Melissa, who you paid for time with-
Weil: What about her?
Ria: She's your daughter.

The only way three people can keep a secret is if two of them are dead

Cal

Cal: What's your content analysis of the mother?
Gillian: She was definitely concealing something. When I asked her about Miss McCartney, she started referring to her as 'that woman'.
Cal: As in, 'I did not have sexual relations with that woman, Miss Lewinsky'

Gillian: You think I'm naive just because I don't share your twisted view of the world.
Cal: That and you read romance novels.
Gillian: Yes I do, because they make me happy. A pursuit I highly recommend to you.
Cal: Truth or happiness, never both.

Eli Loker: I would like to sleep with you.
Dr. Cal Lightman: Ah, Eli Loker, Ria Torres. He's harmless, just always speak the truth about what's on his mind. What do you call it again?
Eli Loker: Radical honesty.

Ria: You drugged her so she could lie?
Cal: Never let the facts get in the way of the truth.

Rebecca: The truth isn't good enough for these people.
Cal: Who said anything about the truth?

(to Gillian) No, no, you don't want the muffins here. They're terrible. They taste like sofa cushions with the moldy nuts your grandmother used to keep in a little jar.

Eli

Cal: (to Ria) Oh look, now you're embarrassed. Well you have every reason to be. You did get it wrong didn't you? Sergeant Scott didn't rape Sheila Lake.
Gillian: Cal!
Cal: She's the one making snide remarks. Look at her face.
Ria: How do people work here?

Gillian: It's a possibility but I'll need to assess his psychological state prior to the crash. Do you have any old video tape of him?
NASA Director Schaumburg: We're the Federal Government. We record everything.

Cal: 94th percentile. What did she do differently?
Ria: I can tell you one thing. She got murdered the day before she took the test.

Gillian: Do you still have that note, that I brought you? I want it for my office.
Cal: (handing over the note) You really are a pack rat.
Gillian: You could have just told me what this was for.
Cal: No. You're a terrible liar.
Gillian: Normal people think that's a good thing.

Lie to Me Quotes

Weil: You haven't done enough muck-raking for one day?
Ria: Sir. We don't think you were doing anything sexual at that club, because, I believe this escort, Melissa, who you paid for time with-
Weil: What about her?
Ria: She's your daughter.

Gillian: Do you still have that note, that I brought you? I want it for my office.
Cal: (handing over the note) You really are a pack rat.
Gillian: You could have just told me what this was for.
Cal: No. You're a terrible liar.
Gillian: Normal people think that's a good thing.