You could fill a book, a lot of books, with things Dad doesn't know.
7 seconds sound clip from the Ratatouille movie soundboard.
You can hear this line at 00:08:06 in the Blu-ray version of the movie.
Quote context
[...]
- I'm telling you, saffron will be just the thing. Gusteau swears by it.
- Just the greatest chef in the world. Wrote this cookbook.
- You could fill a book, a lot of books, with things Dad doesn't know.
- And they have, which is why I read. Which is also our secret.
- What's taking those kids so long?
- Ah, L'Aquila saffron. Italian. Huh?
[...]