Security is an attempt to try to make the universe static so that we feel safe.

Differences challenge assumptions.

It is possible to be different and still be all right. There can be two - or more - answers to the same question, and all can be right.

Good health is not something we can buy. However, it can be an extremely valuable savings account.

Climate change joined immigration, job creation, food safety, pilot training, veterans' care, campaign finance, transportation security, labor law, mine safety, wildfire management, and scores of executive and judicial appointments on the list of matters that the world's greatest deliberative body is incapable of addressing.

Writing for adults and writing for young people is really not that different. As a reporter, I have always tried to write as clearly and simply as possible. I like clean, unadorned writing. So writing for a younger audience was largely an exercise in making my prose even more clear and direct, and in avoiding complicated digressions.

Once in a while I'll get moved to do some exercise. It's something I long for but the biggest problem is bending down and putting my tennis shoes on. Once I go out I'm OK.

There's no big secret to training. But different body, different training. With me, you have to build muscles but also stay flexible and stay kind of soft, which I am naturally.