Mandy: You're a pediatrician, he's being a child.
Georgie: How does wanting us to be a family make me a child?
Mandy: You really want to have this fight in front of a stranger?
Georgie: Married people fight all the time, right?
Dr. Bell: Uh...
Mandy: You don't have to answer that. And no, they don't.
Dr. Bell: Actually...
Mandy: I said don't answer.

Sheldon: Dr. Prakash, I'm on the hunt for a mentor who's not afraid to challenge entrenched scientific paradigms.
Dr. Prakash: Well, mainstream science has always been threatened by new ideas.
Sheldon: True. Like Galileo being imprisoned for his heliocentric model of the universe.
Dr. Prakash: And did you know Semmelweis was put in an asylum for suggesting that doctors wash their hands?
Sheldon: I did. Did you know that Michael Servetus discovered pulmonary circulation and was burned at the stake?
Dr. Prakash: Or Henry Oldenburg was arrested...
Sheldon: Arrested as a spy for corresponding with scientists from other countries!
Dr. Prakash: This isn't a competition.
Sheldon: Oh, I thought we were bonding.
Dr. Prakash: Fair enough. We're bonding.

Sheldon: How would you feel about joining me in the groundbreaking search for exoplanets that could support life?
Dr. Prakash: I'd love it. How would you feel about joining me in finding subatomic particles that move backwards in time?
Sheldon: You mean tachyons?
Dr. Prakash: Yes.
Sheldon: That's nonsense. Let's get started on my thing.

Sheldon: [clears throat] You should know, I'm replacing you with a more courageous mentor.
Dr. John Sturgis: I'm sorry to hear that, Sheldon.
[cut to Dr. Linkletter's office:]
Sheldon: One who's not afraid of new ideas.
Dr. Linkletter: Great.
Sheldon: Don't think of it as me walking away, think of it as you being left behind.
Dr. Linkletter: I'm okay with that.
[back to Dr. Sturgis's office:]
Sheldon: Thank you for helping me on my journey. But you're like a rocket booster that must be discarded for me to reach escape velocity.
Dr. John Sturgis: I understand.
[back to Linkletter:]
Sheldon: I'm walking away now.
Dr. Linkletter: Goodbye.
Sheldon: I'm walking backwards, so it seems like you're fading into obscurity.
Dr. Linkletter: Neat.
Sheldon: Take care. Farewell. Ciao.
[back to Sturgis:]
Sheldon: Bon voyage.
Dr. John Sturgis: Arrivederci.
[split-screen:]
Dr. John Sturgis: What a charming young man.
Dr. Linkletter: Kook.

Mandy: Why would you tell the doctor I got pregnant when you were 17?
Georgie: She asked what our history was.
Mandy: Medical history!
Georgie: That was unclear.

Sheldon: So, where exactly is the telescope?
Dr. Prakash: Hawaii. We just access its data.
Sheldon: Ah. And what are we looking for?
Dr. Prakash: Well, you're looking for these numbers here to change... that would indicate that the star is dimming, possibly because an orbiting planet is passing in front of it.
Sheldon: Mm-hmm. [chuckles softly] ... ... Star Trek made this seem a lot more fun.

Missy: Mom, can I get your opinion on something?
Mary: Of course, sweetie. I'm not just your mother, I'm also your friend.
[Missy gives her mother a questioning look and then walks away]

Georgie: The good news is she ain't gonna remember any of this.
Mandy: And we don't have to tell a soul.
Georgie: Pinky swear?
Mandy: Done. And while we're swearing, let's promise not to fight in front of her anymore.
Georgie: Promise.
Mandy: And, uh, the next time you're gonna propose, give me a little warning.
Georgie: You got it.
Mandy: Okay. [CeeCee coos]
Georgie: Mandy McAllister...
Mandy: Oh, not now!

Dr. John Sturgis: I heard Sheldon is working with Prakash.
Dr. Linkletter: Yeah, poor Prakash.
Dr. John Sturgis: [chuckles] Sheldon can be a bit much sometimes, but you have to admit he has a remarkable mind.
Dr. Linkletter: As he will be the first to tell you.
Dr. John Sturgis: [chuckling] I actually miss him.
Dr. Linkletter: I suppose things are a bit more lively when he's around.
Dr. John Sturgis: Wouldn't it be something if he really did find life on other planets?
Dr. Linkletter: He would immediately become the most famous scientist in the history of mankind. [John chuckles and walks off] Where are you going?
Dr. John Sturgis: Just to see if he needs any help.
Dr. Linkletter: Wait, I'll come with you.

Meemaw: Hey there, birthday boy. What're you doing home so early?
Georgie: Apparently, wasting my time.
Mandy: You cannot just show up here and spring a proposal on me.
Meemaw: You proposed?
Georgie: Don't worry. It won't happen again. [exits]
Meemaw: [to Mandy] So, when's the wedding?

Brenda Sparks: Who was that?
Billy Sparks: Britney Perkins.
Brenda Sparks: She that, uh, chunky one with the headgear?
Billy Sparks: No, she's a cheerleader and her teeth are beautiful.
Brenda Sparks: Oh. And... and she asked you out.
[cut to Brenda knocking on the Coopers' front door, which Missy opens:]
Brenda Sparks: What do you know about Britney Perkins?

Missy: That's her right there.
Brenda Sparks: [exhales softly] She's cute.
Missy: And this was before her boobs came in.
Brenda Sparks: So, she's just messing with Billy?
Missy: She might've asked him out. [off Brenda's look] Okay, she's messing with him.

Missy: Are you okay?
Billy Sparks: No. Britney Perkins asked me to go to the movies, but my mom says I'm not allowed to date because I'm too young.
Missy: I'm sure she's just looking out for you.
Billy Sparks: Maybe I could sneak out and still go with her.
Missy: Don't do that.
Billy Sparks: You sneak out of your house.
Missy: Because I'm a troubled kid. You're not.

Missy: I'll go to the movies with you.
Billy Sparks: You don't have to do that.
Missy: I want to. It'll be fun.
Billy Sparks: But aren't you going to her party?
Missy: I wasn't invited. Which is fine, 'cause she's a bitch.
Billy Sparks: Wow. You are troubled.

Adult Sheldon: While it was nice to have President Hagemeyer on my side, I still needed to find an advisor to approve my research. Some intrepid soul who was unafraid of tarnishing their reputation by taking a chance on a brilliant mind and a bold, untested idea.