Twins are a high-risk pregnancy, by definition. The quieter I am, the longer I can keep them growing.

I've come to recognize what I call my 'inside interests.' Telling stories. And helping people tell their stories is a sort of interpersonal gardening. My work at NBC News was to report the news, but in hindsight, I often tried to look for some insight to share that might spark a moment of recognition in a viewer.

In the beginning when I sat next to Tom Brokaw on the 'Today' show, the stories I was interested in were those having to do with women and children and learning and health. In those days, 25 to 30 years ago, that was called soft news, and not in a nice way.

I'm not driven by killer ambition. I'm not a workaholic. I'm a good team player. I don't have to be captain, but I do want to play on a winning team.

The best thing I probably do is - I'll say I'm a pretty darn good parent. I got good kids.

On the personal side, family is really important to me. I have a big family - five kids and 12 grandkids - so keeping that going is wonderful. And I do a lot of philanthropy. I'm chairman of the San Francisco Museum of Modern Art.

I can only speak for me... but in my life, I find that, in sobriety, I feel much more, and I have much more depth. I also feel - not to segue, but as being a parent of five kids, I can bring much more to my acting, and so I'm all about anything that gives you more feeling and more depth.

When you are thinking about going away for a long duration mission, it has to be part of your mindset that you're leaving your family, but it's for the right reasons, for good reasons, and hopefully helping humanity.