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.

I was taught to strive not because there were any guarantees of success but because the act of striving is in itself the only way to keep faith with life.

No matter what message you are about to deliver somewhere, whether it is holding out a hand of friendship, or making clear that you disapprove of something, is the fact that the person sitting across the table is a human being, so the goal is to always establish common ground.

I loved what I did. I could've been secretary of state for ever.

Often if you don't speak up, whatever you thought was stupid to say some man would say and then everyone would say 'as he said'.

I don't think people should think of women's issues as auxiliary issues - they are central.

I love being a woman and I was not one of these women who rose through professional life by wearing men's clothes or looking masculine. I loved wearing bright colors and being who I am.