The exposed nature of life in the public square affects leaders' attitudes toward risk - and failure.

In the run-up to the 1992 Democratic convention, Clinton's campaign realized that voters thought the young governor had a privileged upbringing. They didn't buy his alleged concern for the middle class.

The press never accepts at face value that the President is taking a certain action because he wants to create jobs or because he believes that it is in the best interests of the American people or that he is genuinely committed to making life better for people.

There are people in the public sector with a range of experiences that have no equivalent in business, but are essential to governing, like keeping a kid in school or helping someone get and hold a job. The value of those skills can't easily be measured against a bottom line.

During my years as a press secretary, I developed a powerful internal filter, which worked to strip all things 'off message' from my thoughts before they came out of my mouth. It didn't always work, of course, and I said more than a few things I regretted.

Obama has become too dependent on formal speeches and set town halls. His idea of mixing it up is taking off his jacket.

Many differences are rooted in biology and reinforced through culture, so it's important to acknowledge that. Because if you say men and women are the same and if male behaviour is the norm, and women are always expected to act like men, we will never be as good at being men as men are.