Knowing nothing about the drug trade, Walt enlisted the aid of his former student, Jesse Pinkman, to sell the meth he produced. After being diagnosed with terminal lung cancer, Walt started manufacturing chemically pure crystal methamphetamine to provide for his family upon his death. Wynne High School alongside working at the A1A Car Wash to financially support his family (his wife Skyler, son Walt Jr., and infant daughter Holly). Before entering the drug trade, Walt was a respected chemist and scientist who later worked as an overqualified high school chemistry teacher at J. White, is an American former chemist and major narcotics distributor from Albuquerque, New Mexico, whose drug empire became the largest meth operation in American history, surpassing both Gustavo Fring's drug empire and the Cartel's. Walter Hartwell ' Walt' White Sr., also known by his clandestine pseudonym and business moniker Heisenberg and also frequently referred to as Mr. ― Walt's speech to his wife Skyler, explaining who he is. A guy opens his door and gets shot, and you think that of me? No. No, you clearly don't know who you're talking to, so let me clue you in. Do you know what would happen if I suddenly decided to stop going into work? A business big enough that it could be listed on the NASDAQ goes belly up. Who are you talking to right now? Who is it you think you see? Do you know how much I make a year? I mean, even if I told you, you wouldn't believe it.