When my children were growing up, we began every family meal - which included breakfast and dinner every day - with a prayer. We are Jewish and so it was the prayer over bread, when we were having bread, or the catch-all prayer for everything when we weren't.

Patients who are being kept alive by technology and want to end their lives already have a recognized constitutional right to stop any and all medical interventions, from respirators to antibiotics. They do not need physician-assisted suicide or euthanasia.

Vaccines are the most cost-effective health care interventions there are. A dollar spent on a childhood vaccination not only helps save a life, but greatly reduces spending on future healthcare.

Over his illustrious career, John Harris has explored the most challenging bioethical questions with insight, engaging wit, and eloquence. In Enhancing Evolution, Harris does it again. He argues that it is not just an option but an obligation for people to use available biomedical technologies to enhance their own--and their children's--physical and mental abilities. Harris rightly deserves his reputation for fearlessly following his ethical arguments wherever they lead.

When my children were growing up, we began every family meal - which included breakfast and dinner every day - with a prayer. We are Jewish and so it was the prayer over bread, when we were having bread, or the catch-all prayer for everything when we weren't.

We all focus on health care and diabetes and heart disease but there's all sorts of things like the simple fact that, you know, heavier people, transportation is more, so there's more spent on gasoline, more on jet fuel, people have had to change the size of doorways, the size of chairs on airplanes and at sports stadiums, so there's a lot of hidden costs as well to the increasing girth of Americans.

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.