Leonard Hofstadter: I'm starting a book.

Sheldon Cooper: That would be big news from Penny, but you've read a book before.

Penny Hofstadter: He means he's writing a book.

Leonard Hofstadter: I do. It's something I've been thinking about for a long time.

Penny Hofstadter: Yeah. It's about a brilliant physicist who solves crimes using science.

Sheldon Cooper: Oh, Leonard...

Leonard Hofstadter: It's not about you!

Sheldon Cooper: He probably has to say that for legal reasons.