Quote from Mr. Givens in the episode A New Home and a Traditional Texas Torture
Mr. Givens: Caltech? Fantastic. Sheldon: For Caltech? I know. Mr. Givens: Mm. Well, I'm sure you're gonna do great things. Sheldon: I hope so. I intend to. I'm being modest. I will. Mr. Givens: You're taller, but you're still the same. Sheldon: It's fun, isn't it? Mr. Givens: Okay. Good luck at Caltech, Sheldon. Sheldon: I don't believe in luck. Mr. Givens: Well, here's hoping that a random universe works out in your favor. Sheldon: Thank you. Bye. Mr. Givens: Hmm. [to his class] That young man might change the world someday. Or blow it up. Who's to say?