I never pictured myself in California. I just thought I would be a character actress in New York on the stage. I never really had that stardom goal; I just wanted to be able to work as an actress and not as a waitress.

Lots of kids, including my son, have trouble making the leap from reading words or a few sentences in picture books to chapter books. Chapters are often long... 10 pages can seem like a lifetime to a young reader. Then reading becomes laborious and serious. That's why some of the chapters in my books are very short.

I always wanted my kids to like me and think I was funny, so I made up this story about a kid named Jake and his racecar that he had built from scratch, fully loaded with whatever fantastical gadget he or I wanted him to have at the moment. I loved making up the stories off the top of my head.

Our kids are not Jewish, and they're not Catholic. They're not Episcopalian. They're not Buddhist. They're not anything. We do all the holidays to keep the traditions and the culture going, but I truly don't have a great feeling about any particular organized religion, and I don't think it's right to impose one on my kids.

Since my high school years, I have been interested in history, especially in Roman history, a topic on which I have read rather extensively. The Latin that goes with this kind of interest proved useful when I had to generate a few terms and names for cell biology.

I take no pleasure in the fact that the scientific predictions I've relayed to popular audiences turn out to be true.

Ethics is not routinely taught to science students except in medicine, and I think it should be.

Something that's very important is to preserve the sense of surprise, the sense of discovery. The eye of the person you are talking to, your shadow on the ground. It's important not to get suffocated by all the things in life and lose that sense of surprise.