Transcript for Hillary Clinton's Past and Present: Monica Lewinsky to 2016
With speculation swirling that Hillary Clinton's presidential ambitions, the former first lady can be coy when asked about her political intentions. But when she sat down for an exclusive interview with our Diane sawyer, she was very forthcoming about far more personal issues like her age, the sports she loves, and yes, Monica. New York is really our home. Reporter: Hillary Clinton's house is a reminder of the drama shaping her life. The Chicago girl who became a star of Yale law school, the transformation into a political wife of a charismatic candidate for governor of Arkansas. It's not an image question so much as a priority question. Reporter: She also describes what she says was her proudest moment as secretary with the president, the decision to go in and get Osama bin laden. My heart was in my throat because we were watching on the video screen what was happening, and we saw one of the helicopters' tail clip the wall as it tried to get into the compound. You really didn't tell president Clinton about Osama bin laden? No. When president Obama called to tell him, I think the president started by saying something like I assume Hillary's told you. He goes, told me what? Reporter: As we sit together, an old stress has returned. An essay in a magazine making headlines, and political opponents warning they think the topic is still fair game. Monica lewinsky. Mm. Is back in the news. Well, she's perfectly free to do that. She is in my view an American who gets to express herself however she chooses. But that's, you know, not something that I spend a lot of time thinking about. Really? Really. Yeah. I mean, I wrote about it in my book, "Living history." I dealt with it at the time. I have moved on. And that's how I see, you know, my life and my future. You're not looking at me thinking, here she is asking these questions -- No. Because I knew you would. I knew you'd have to. It's something in the news. You have every right to ask. And I have every right to tell you how I feel. Did you call her a narcissistic loony toon? I am not going to comment on what I did or did not say back in the late '90s. Reporter: Those words surfaced recently in notes from years ago, written down by her late friend, Diane Blair. For her part lewinsky writes that her life was overwhelmed by ridicule. She has said she has lived all these years as a punchline. Is there anything you would say to her about her life? Well, I would wish her well. I hope that she is able to, you know, think about her future and construct a life that she finds meaning and satisfaction in. Reporter: Tonight Hillary Clinton's 66 years old. Wow! Reporter: On a schedule almost as taxing as a campaign tour. She and her husband, thanks to some big spenders, including Wall Street companies-r no longer the couple struggling for money. Reportedly, they can charge hundreds of thousands of dollars for speeches. It has been reported you've made $5 million making speeches, the president made more than $100 million? Well, if you -- you have no reason to remember, but we came out of the white house not only dead broke but in debt. We had no money when we got there, and we struggled to, you know, piece together the resources for mortgages, for houses, for Chelsea's education. You know, it was not easy. First of all, we had to pay off all our debts, which you had to make double the money because there's obviously taxes and then pay off the debts and get us houses and take care of family members. Do you think Americans are going to understand five times the median income in this country for one speech? Well, let me put it this way. I thought making speeches for money was a much better thing than getting connected with any one group or company, as so many people who leave public life do. Reporter: The day is winding down. While she says she's still looking ahead to what is possible and what she would leave behind. I probably have as good a sense of how hard the job is as anybody. Age. Age, yes. Isn't it great to be our age? I'm older than you are. You are. Which -- It would be great to be your age again. You would be 69 on election day. That's eightmonths younger than Ronald Reagan. Yeah. It matters. Age matters. It may depending upon who the person is. My mother lived with us until her death at 92, and she was as active and involved and just curious and intellectually capable as people much younger than her. So it's the individual. When are you going to decide whether you're running for president? You know, I'm going to decide when it feels right for me to decide because -- By the end of this year? Well, certainly not before then. Hillary's new book, "Hard choices," comes out Tuesday. As always, our thanks to Diane for that fascinating interview. Make sure to tune in to "Good morning America" tomorrow for robin Roberts' live interview with Hillary Clinton.
This transcript has been automatically generated and may not be 100% accurate.