Be sceptical, ask questions, demand proof. Demand evidence. Don't take anything for granted. But here's the thing: When you get proof, you need to accept the proof. And we're not that good at doing that.

Your dollar cheeseburger isn't a dollar if you factor in what it's going to cost in health care.

People wrap themselves in their beliefs. And they do it in such a way that you can't set them free. Not even the truth will set them free.

I think it's too soon to say that, and I think, basically - most of the people that I ran across and most of the studies that I saw suggest people don't go to McDonald's to eat healthy food. They go to eat fries and cheeseburgers.

Benjamin Franklin refused to have one of his children vaccinated against smallpox. The four-year-old boy died, and Franklin wrote later of how mistaken he was to expose him to the needless risk.

There are always potential side effects for every vaccine.

Flu is easily transmitted, so if you are working with sick people - who are most at risk for getting seriously ill - you ought to be vaccinated. I am not really equipped to say whether it should be the law or not.