We know cancer is caused ultimately via a link between the environment and genes. There are genes inside cells that tell cells to grow and the same genes tell cells to stop growing. When you deregulate these genes, you unleash cancer. Now, what disrupts these genes? Mutations.

I think the cardinal rule of learning to write is learning to read first. I learned to write by learning to read.

The history is important because science is a discipline deeply immersed in history. In other words, every time you perform an experiment in science or in medicine, what you're actually doing is you're answering someone, answering a question raised by someone in the past.

Writing anything as an expert is really poisonous to the writing process, because you lose the quality of discovery.

I pride myself in taking care of my mind, body and soul, and not just through exercise.

I know that there are millions of Americans who are content with their health care coverage - they like their plan and, most importantly, they value their relationship with their doctor.

When I was 27, I felt old. I didn't feel healthy. I just wasn't taking care of my body, and I had a body that wanted me to take care of it.

The subsidy for employer-sponsored coverage has tethered health care to employment in a way that virtually no economist endorses.