Whatever the job you are asked to do at whatever level, do a good job because your reputation is your resume.

And so I think that the idea of America working with other countries to solve problems is good for us, and it is part of digging us out of the “my way or the highway” approach that was evident in the previous eight years.

Foreign policy is now a huge field. It isn't just people who are studying political science. There are so many aspects to it in terms of understanding hard science for people who are studying climate change, or people who are interested in health policy or food security, or people who care about education.

History is written backwards but lived forwards.

I was struck by the joy of those pilots in committing coldblooded murder . . . Frankly, this is not cojones. This is cowardice.

I have said this many times, that there seems to be enough room in the world for mediocre men, but not for mediocre women, and we really have to work very, very hard.

I was in Europe and it was at this stage that I fell in love with Americans in uniform. And I continue to have that love affair.