The truth is that stress doesn't come from your boss your kids your spouse traffic jams health challenges or other circumstances. It comes from your thoughts about these circumstances.

I think that we have a number of different health care challenges in our country and certainly addressing the uninsured is one and the second is making sure that those with health insurance actually get the care that they assume they'll have available to them if they get sick.

Challenges of historic import threaten America's future. Action on the deficit economy energy health care and much more is imperative yet our legislative institutions fail to act. Congress must be reformed.

I know the exploding cost of health care is at the root of our long-term fiscal challenges.

The biggest public health challenge is rebuilding health systems. In other words if you look at cholera or maternal mortality or tuberculosis in Haiti they're major problems in Haiti but the biggest problem is rebuilding systems.

Is anyone serious about the politics of happiness? David Cameron dipped a toe in the water using the word lightly but denying the hard policies it implies. Labour shies away from it but should take up the challenge.

Happiness includes chiefly the idea of satisfaction after full honest effort. No one can possibly be satisfied and no one can be happy who feels that in some paramount affairs he failed to take up the challenge of life.

I have great people smart people that are around me and we love the challenge. I guess it's like climbing a mountain or building a building. It's a challenge but you love every challenge that it brings or presents itself.

Power must be used but it must be tempered by soul-searching and the recognition of our human capacity for error. That is the maxim that should inform our approach to every challenge from reforming state government to engaging in foreign affairs.

In government you carry each hope each disillusion. And in politics it's always about the next challenge.