Amy: So, you're Sheldon's big brother.
Georgie: Uh, yeah. He got the brains. I got the bod. (chuckles) And the face and the hair.

Georgie: Picking on him? Is that what he told you?
Leonard: Well, what about the time you threw away his Halloween costume?
Georgie: Well, yeah, 'cause he was gonna dress as some girl scientist.
Leonard: Madame Curie?
Georgie: Oh, I didn't know she was a madam.

Georgie: You went away to college after Dad died. Who do you think took care of everything?
Sheldon: Mom did. Mom always took care of everything.
Georgie: Mom was a mess, Missy was a dumb teenager. I had to look after both of 'em.
Sheldon: I talked to Mom all the time. If she was upset, she would have told me.
Georgie: She was protecting you, you idiot, just like everyone always does.
Sheldon: If things were bad, then why didn't you tell me?
Georgie: Because I was protecting you, too. (sighs) You're my baby brother, Sheldon. I know life has been hard for you, but that don't mean it's been easy for the rest of us.

Georgie: Hey, you've reached George Cooper. Please leave a message. Unless this is Sheldon again, in which case, please try me on my other number, 1-800-suck-it.

Amy: So are you feeling okay? No wedding jitters?
Sheldon: No. There is nothing in the world that would stop me from marrying you tomorrow, even me from the future coming back to prevent the wedding and the subsequent birth of a child who will destroy humanity.
Amy: Because if you came from the future, that would mean you already went through with the wedding because you believe that time travel is on a closed loop.
Sheldon: I love you so damn much.

Sheldon: Amy, I usually know exactly what to say. But in this moment I have no words.
I guess I'm overwhelmed by you. In a good way. Not in the elevator in the Haunted Mansion way. Even if I can't tell you now how I feel, I will spend my life showing you how much I love you.

Sheldon: Are you having an allergic reaction to my boutonniere?
Leonard: No. I'm just so happy for you. And for me. After today, you are officially - and, more important, legally - Amy's problem.
Sheldon: Don't be silly, Leonard. I will always be your problem.