[Even though Mrs. Frizzle is taking her kids inside of the human body, Varian doesn't seem at all put-off by the subject matter. If anything, he's even more curious...]

There's still a whole lot we don't know about how people work, back home. You think all of this information is accurate?

[He lives in a time period where things like x-rays don't exist. If you wanted to study somebody, you had to. Uh.

Be more practical.]