Watch Oprah's Interview with Lance Armstrong

The first part:

Oprah asked why he came forward now, Lance replied, "I don't know that I have a great answer. I will start now by saying this is too late ... I view this situation as one big lie that I repeated a lot of times ... I am a flawed character."

He added, "I didn't invent the [doping] culture, but I did nothing to stop the culture ... and I am sorry for that."

See more and watch part 2 of the video after the cut......

Lance said he began using EPO (erythropoietin) -- a hormone that enhances red blood cell production -- in the mid 90s.

When asked if he was ever afraid he'd be caught -- Lance replied, "No."
When asked if it felt wrong at the time -- Lance replied, "No."
When asked if he felt like he was cheating -- he replied, "No ... I viewed it as a level playing field."

As for how the whole operation worked, Armstrong hedged on the details -- saying, "I viewed it as very simple. You had things that were oxygen-boosting drugs, for lack of a better word, that were incredibly beneficial for endurance sports. And that's all you needed."

He added, "My cocktail was only EPO ... not a lot ... transfusions and testosterone."

Lance Armstrong told Oprah during the first of a two-part interview Thursday night, that he doped throughout his career and might not have been caught if not for his comeback in 2009. His longtime friend and training partner George Hincapie, who was along for the ride on all his Tour de France wins from 1999-2005, was forced to give him up to anti-doping authorities.

Lance also admitted that he was the ring leader of the US Postal Service doping team .

''I'm a flawed character,'' he said.
Did it feel wrong? Oprah asked
''No,'' Armstrong replied. ''Scary.''
''Did you feel bad about it?'' Winfrey pressed him.
''No,'' he said. ''Even scarier.''
''Did you feel in any way that you were cheating?''
''No,'' Armstrong paused. ''Scariest.''
''I went and looked up the definition of cheat. And the definition is to gain an advantage on a rival or foe. I didn't view it that way. I viewed it as a level playing field.'

''I'm not comfortable talking about other people,'' Armstrong said. ''I don't want to accuse anybody.''

''This story was so perfect for so long. It's this myth, this perfect story, and it wasn't true,'' he said.

Then Oprah began asking for yes-or-no answers to five questions.
Did Armstrong take banned substances? ''Yes.''
Did that include the blood-booster EPO? ''Yes.''
Did he do blood doping and use transfusions? ''Yes.''
Did he use testosterone, cortisone and human growth hormone? ''Yes.''
Did he take banned substances or blood dope in all his Tour wins? ''Yes.''

In your opinion is it humanly possible to win the Tour de France without doping seven times in a row? Oprah asked. Not in my opinion, Lance answered

''I deserve this,'' he said ''It's a major flaw, and it's a guy who expected to get whatever he wanted and to control every outcome. And it's inexcusable. And when I say there are people who will hear this and never forgive me, I understand that. I do. That defiance, that attitude, that arrogance, you cannot deny it.''

Armstrong said he started doping in mid-1990s but didn't when he finished third in his comeback attempt in 2009.

''Have you made peace?'' Winfrey asked.
''No,'' Armstrong replied, ''because so many people have been hurt too badly, and a 40-minute (phone) conversation isn't enough.''