Adult Sheldon: Scientific rivalries are a fact of life. When two competing scientists work on a project, it can devolve into an intellectual boxing match. Over the years, there's been a few classic heavyweight bouts. Newton and Leibniz. [bell ringing] Tesla and Edison. And in a lesser-known but equally brutal bout...
[fantasy:]
Announcer: Linkletter versus Sturgis, The Tussle with No Muscle. Let's see how they stack up in a tale of the tape. In the wire frame glasses, the Eureka from Topeka, Grant Linkletter. IQ: 159. Papers published: 272. Bedtime: 8:30. And his opponent, in his favorite sensible shoes, The Brain from Maine, John Burgess Sturgis! IQ: 162. Papers published: 221. Bedtime: 7:45 on weekdays, 9:00 on Saturday night. Fasten your thinking caps and let's get it on.

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.

Dr. John Sturgis: I was brought in to help but Dr. Linkletter doesn't value my input.
President Hagemeyer: Oh, I hear you. That must be tough.
[cut to:]
Dr. Linkletter: Ever since he was brought back, he contradicts everything I say.
President Hagemeyer: I hear you. That must be tough.
[cut to:]
Sheldon: There was a time when their arguing brought out the best in them, but now it's just hindering our work.
President Hagemeyer: I hear you. That must be tough.

Dr. John Sturgis: The free-streaming length of the axion is too long. It'll erase the fluctuations.
Dr. Linkletter: You're completely forgetting that it is nonrelativistic dark matter.
Dr. John Sturgis: You'll never have the resolution to see microkelvin features.
Dr. Linkletter: I think your brain is as smooth as the top of your head.
Dr. John Sturgis: Low blow, Grant.
Sheldon: He's right, gentlemen, let's keep it to science.
Dr. John Sturgis: You'll never have the resolution to see microkelvin features.

Dr. Linkletter: I cannot work with that creepy little know-it-all one more day.
President Hagemeyer: I-I'm sorry, but are we talking about Sheldon or Sturgis?
Dr. Linkletter: Sturgis. Well, both, but mostly Sturgis.
[cut to:]
Dr. John Sturgis: He's not interested in anyone else's input.
President Hagemeyer: I-I'm sorry, Sheldon or Linkletter?
Dr. John Sturgis: Linkletter.
President Hagemeyer: Ah, got it. Continue.