Oprah: You said to me earlier you don't think it was possible to win without doping? Armstrong: Not in that generation, and I'm not here to talk about others in that generation. It's been well-documented. I didn't invent the culture, but I didn't try to stop the culture, and that's my mistake, and that's what I have to be sorry for, and that's what something... and the sport is now paying the price because of that. So I am sorry for that.

Lance Armstrong tells Oprah Winfrey that he didn't invent the culture of doping, but he didn't do what he could to stop it.