It's become Walter's most famous quote. This stunning and eye-opening speech made by Walter to his shocked and slightly scared wife Skyler provided a very blunt clue as to just how far down the road to the dark side Walter had gone. In this moment, it was revealed what Walter felt about himself. In the beginning, it was a desperate effort to provide for his family. Then it became about survival. Now, it was about being the man. About being the king pin. About being the one who knocks.