"When we first see Walt, he’s depressed. Everyone in his past – college, parents, friends, teachers – said to him, ‘The sky’s the limit for you.’ And perhaps his emotional makeup didn’t allow him to reach for the stars, when he should have. If he’d decided to become a truck driver, everybody would say, ‘You’re wasting your talent.’ But he became a teacher, which no one can criticize, because teaching is very noble.
When he received the information about his cancer, his depression made him more susceptible than if he was whole and feeling good about himself. My theory is, everyone is capable of being dangerous. We’re all capable of inflicting harm to ourselves and to others.” - Bryan Cranston

"Jesse cares for Walt. And he wants to believe that Walt is something of a decent human being. But then he realizes, you know what? This guy is out of his fucking mind."


"Jesse really grows up, really finds that line in the sand that he himself can’t cross, and won’t cross. And he’s more of a grown-up … than he ever was before, and perversely, I think that makes Walt need him more than he has needed Jesse in the past."


—-Aaron Paul and Vince Gilligan on Season Five, Jesse’s Journey dvd extra on Breaking Bad: The Complete Series.