Americans tend to endorse the use of physician-assisted suicide and euthanasia when the question is abstract and hypothetical.

Having been an oncologist and having cared for scores, if not hundreds, of dying patients, when you don't have a treatment that can shrink the tumor and the patient will die, it's a very difficult conversation. It's emotionally draining.

The president recognizes that funding global health is good for national security, domestic health and global diplomacy. Consequently, President Obama has steadily increased funding for the President's Emergency Plan for AIDS Relief, or PEPFAR, which was created by President Bush and has strong bipartisan support.

My father always has been attractive because of his energy, warmth, charm, and talent for finding some connection with people from all cultures and walks of life. He rarely observed social formalities and niceties - something he has passed on to his boys.

The situation around Terri Schiavo was a deeply held conflict over what to do if someone isn't going to return to consciousness or competence. Who will decide? Even there, where we had settled legal rules, we still had disagreement. We're torn about these things.

I'm the son of a pediatrician, and I do believe that the most important resource we have is our kids. And I think the most important thing for America's future is to invest more in our children.

We had a big controversy in the United States when there was a limited number of dialysis machines. In Seattle, they appointed what they called a 'God committee' to choose who should get it, and that committee was eventually abandoned. Society ended up paying the whole bill for dialysis instead of having people make those decisions.