"If you don't know who I am, then maybe your best course would be to tread lightly."
— Walter White
If You Dont Know Who I
If you don't know who I am, then maybe your best course would be to tread lightly.
About this quote
The full version of Walt's threat to Hank, delivered in Season 5, Episode 9 ("Blood Money") of Breaking Bad, created by Vince Gilligan. Hank has just confronted Walt in his garage, having finally uncovered his identity as Heisenberg. Rather than showing remorse or fear, Walt issues a cold ultimatum, making clear that his criminal empire is not something Hank can dismantle with impunity.
Source
Breaking Bad, Season 5, Episode 9: 'Blood Money'