It's time to fundamentally change the way that we do business in Washington. To help build a new foundation for the 21st century, we need to reform our government so that it is more efficient, more transparent, and more creative. That will demand new thinking and a new sense of responsibility for every dollar that is spent.

Let me be absolutely clear. Israel is a strong friend of Israel's. It will be a strong friend of Israel's under a McCain administration. It will be a strong friend of Israel's under an Obama administration. So that policy is not going to change.

I don't care whether you're driving a hybrid or an SUV. If you're headed for a cliff, you have to change direction. That's what the American people called for in November, and that's what we intend to deliver.

Now we're in the midst of not just advocating for change, not just calling for change - we're doing the grinding, sometimes frustrating work of delivering change - inch by inch, day by day.

Of course, there is no question that Libya - and the world - will be better off with Gaddafi out of power. I, along with many other world leaders, have embraced that goal, and will actively pursue it through non-military means. But broadening our military mission to include regime change would be a mistake.

We have an obligation and a responsibility to be investing in our students and our schools. We must make sure that people who have the grades, the desire and the will, but not the money, can still get the best education possible.

Cutting the deficit by gutting our investments in innovation and education is like lightening an overloaded airplane by removing its engine. It may make you feel like you're flying high at first, but it won't take long before you feel the impact.

You can choose a future where more Americans have the chance to gain the skills they need to compete, no matter how old they are or how much money they have. Education was the gateway to opportunity for me. It was the gateway for Michelle. And now more than ever, it is the gateway to a middle-class life.

We can't get to the $4 trillion in savings that we need by just cutting the 12 percent of the budget that pays for things like medical research and education funding and food inspectors and the weather service. And we can't just do it by making seniors pay more for Medicare.

I know my country has not perfected itself. At times, we've struggled to keep the promise of liberty and equality for all of our people. We've made our share of mistakes, and there are times when our actions around the world have not lived up to our best intentions.