Breaking Bad, Season 2

Walter:
There was no fugue state. I remember everything. The truth is I couldn't stand to spend another second in that house. I just had to...get out. And so I left. I didn't think about it, I just did it. I walked for a long time, and when I couldn't walk anymore, I hitchhiked. I got as far as Gallup. And then it was just time to come home.

Therapist:
So, being found naked in a supermarket, that was your way of giving credibility to a lie? Of avoiding questions about your disappearance? Why run away? What did you feel you had to run from?

Walter:
Doctor, my wife is seven months pregnant with a baby we didn't intend. My fifteen-year old son has cerebral palsy. I am an extremely overqualified high school chemistry teacher. When I can work, I make $43,700 per year. I have watched all of my colleagues and friends surpass me in every way imaginable. And within eighteen months, I will be dead. And you ask why I ran?