Leonard: Everyone's waiting. What are you guys doing?
Amy: Super asymmetry.
Leonard: Super asymmetry? Is that a thing?
Sheldon: We're inventing it right now.
Leonard: Don't you think this can wait until - Hold on. This is interesting.

Leonard: What would you be if you were attached to another object by an inclined plane, wrapped helically around an axis?
Sheldon: Screwed?
Leonard: There you go.

Sheldon: This song is never going to stop. Have you ever dealt with something so relentlessly irritating?
Leonard: That's a trick question, right?

Leonard: Penny, as a scientist, my job is to figure out why things happen. But I don't think I'll ever understand how someone like me could get to be with someone like you. You know maybe I don't need to understand it, I just need to be grateful. I love you, Penny.

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.

Amy: Sheldon, when I was a little girl, I used to dream about my wedding. But, eventually, I stopped, because I thought that day would never come. And then I met you. From the first moment in that coffee shop, I knew that there was something special between us, even though I did work on a study that disproved love at first sight.
Sheldon: I loved that study the moment I read it. Ironic, huh?
Amy: Clearly, it was wrong. Because I felt something that day, and those feelings have only gotten stronger with time. I can't imagine loving you more than I do right now.
But I felt that way yesterday and the day before yesterday and the day before that.
Sheldon: Is that growth linear or accelerating?
Amy: Accelerating.
Sheldon: Oh, maybe we could graph it out.
Leonard: Save something for the honeymoon.
Sheldon: Smart.
Amy: Sheldon, I don't know what the future holds, but I know that I've never been happier than I am in this moment marrying 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.