Adult Sheldon: It was the best spring break I ever had. Until my parents realized I was missing and I experienced something worse than the wrath of Khan, the wrath of Dad.

Adult Sheldon: I didn't realize until years later that my father was only asking questions about lightning and thunder to cheer me up. In fact, he would often pretend to be dumb just to make me feel better.

Adult Sheldon: My father didn't always get the credit he deserved. The advice he gave me actually worked out pretty well. Of course, I never told him.
George: Talked to Billy.
Missy: Why would you do that?
George: No, it was good.
Missy: Stay out of my life.
Adult Sheldon: He may not have been the world's greatest dad. But maybe we weren't the world's greatest kids.

Pastor Jeff: Before our final prayer, would anyone else like to say a few words?
Mary: Missy? [Missy shakes her head] Shelly?
[Sheldon stands up and walks up to the microphone]
Sheldon: I've been thinking a lot about the last moments I had with my dad. It was morning, and he was leaving for work. He said, "See y'all later." And I said nothing. I regret that. I could have said "bye" or asked him for a ride. Or told him that I loved him. But I didn't. I barely noticed he left. So many times that I didn't notice my father. I hope he knew how much I loved him.
Adult Sheldon: I wish I could tell you I said all those things. But I didn't.
Mary: Shelly? [Sheldon shakes his head] [Mary shakes her head to Pastor Jeff]
Pastor Jeff: Let's bow our heads in prayer.
All: Our Father, who is in heaven, hallowed be Your name...
Adult Sheldon: For a long time, I focused on my father's shortcomings. Now that I'm his age and have kids of my own, I realize he was just a person doing the best he could, and he did a lot. I didn't say it at his funeral, but I can say it now. I loved my father. I will miss him forever.

Ms. Hutchins: I don't know.
Mary: Trust me, the men are gonna be lining up.
Ms. Hutchins: Well, they haven't been so far, and I've been basically giving it away.
Mary: That's your business really.

Sheldon: Mom, I know what I want to do for spring break. What happened to your face?
Mr. Lundy: Told you, people take notice.
Mary: This is for my new job.
Sheldon: Is your new job fighting Batman? Because you look like The Joker.

Nathan: Hey, you made it. [Star Trek salute]
Sheldon: It would have been illogical not to.
Nathan: [deep voice] Well, you're going to have a blast.
Sheldon: I know this is un-Spock-like, but I can't stop smiling.
Mr. Givens: [climbs aboard] [British accent] There you are, dear sir. Let's get this pusillanimous bucket of nuts and bolts on the road. [applause and cheering] We have a comic-con to get to!
Sheldon: Mr. Givens?
Mr. Givens: Oh, the pain.