Adult Sheldon: In the world of collecting, I'm what's known as a completist. For example, I own every gauge of model train from the mighty "G," to the tiny "T." Look at how cute it is, I just want to eat it up. However, the downside of being a completist is when something's missing, it's like an itch you can't scratch, even if you own a complete set of Justice League back scratchers... which I do. In this case that itch was the comic book issue Doom Patrol and Suicide Squad Special #1.

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.

Sheldon: Too bad there's not a comic book database so I could search through it and find what I'm looking for.
Dr. Linkletter: Well, CERN has something similar. You can search a database of scientific papers.
Sheldon: But there's no database for comic books.
Dr. Linkletter: You should make one. Somewhere else.
Sheldon: Mmm, sounds like a lot of work.
Dr. Linkletter: Or does it sound like a lot of fun? Go find out.
Sheldon: Do you want to do it with me?
Dr. Linkletter: Only if you share credit, and my name comes first.
Sheldon: Never mind. [exits]
Dr. Linkletter: I knew that would work.

Georgie: Were you mad at Mom for getting pregnant?
Meemaw: Oh, yeah.
Georgie: Did you stop talking to her?
Meemaw: Hell no, I wanted her to hear how pissed off I was. But all that being mad at her just was a waste of time.
Georgie: What made you come around?
Meemaw: I guess you showing up.
Georgie: I do have a natural charm, don't I?
Meemaw: You did, and then you learned to talk.

Sheldon: So, as you can see on the chart on page 34, the amount of time spent searching for grants would be cut by 80%. Do you see what this could do for the scientific community?
President Hagemeyer: Yes. [gasps] We could charge an access fee to every university on the planet, and I can retire on a yacht in the Bahamas.
Sheldon: You're missing the point.
President Hagemeyer: Yeah, yeah, yeah. Uh, good for science. I love it.