Breaking Bad, Season 4

Hank:
This guy Gale Boetticher, he was eccentric. Real character, y' know? He's, uh, he's dead now.

Skyler:
Who was he?

Walter Jr.:
He was a meth cook.

Hank:
Uh, he was a meth chef. We're talking 5-stars, candles, and white tablecloth, y'know. I can't believe these words are coming out of my mouth, but he was a genius, plain and simple. I mean, uh, boy, if he applied that big brain of his to something good, I dunno, who knows? He could've helped humanity or something like that. I mean, how many actual geniuses are there in the world? If he'd have taken his life in a different direction, who knows?

Walter:
Hank, not to tell you your business, but I'm not sure I agree.

Hank:
What do you mean?

Walter:
Well, you showed me that notebook and from what I saw - and this is just my humble opinion - from what I saw on those papers...genius? Not so much. I mean, there was no reasoning, no deductions in those pages, so to my eye, all this brilliance looks like nothing more than just simple rote copying, probably of someone else's work. Believe me, I have been around enough students to know. So this genius of yours, maybe he's still out there.