We saw the integration of the female pilots in the Navy, in combat roles, and the resistance there in the beginning.

A lesson learned, both in the SEAL teams and as an entrepreneur, is that failure is sometimes a critical component of success.

Going through SEAL training taught me that it's OK to fall down three times, as long as you get up four. This is a good philosophy for most things in life.

I never shot much when I was a kid, but on the spotting scope, understanding the ballistics and the calculations, I'm a ten.

And we ought to work our diplomacy first and I think it's a reason it's going to respond increasingly to our diplomacy particularly with the president's direct involvement in the peace process, and I think that's extraordinarily important.

Part of what I loved - and love - about being around older people is the tangible sense of history they embody. I'm interested in military history, for instance, because both my grandfathers fought in World War II. I'm interested in writing because one of those grandfathers wrote books.

Peace is the one condition of survival in this nuclear age.

I don't expect the U.S. and China to get into a trade war simply because I think there are good people on both sides who realize that that's not in either economy's interest.