Rarely have Americans lived through so much change, in so many ways, in so short a time. Quietly, but with gathering force, the ground has shifted beneath our feet as we have moved into an Information Age, a global economy, a truly new world.

People can quarrel with whether we should have more troops in Afghanistan or internationalize Iraq or whatever, but it is incontestable that on the day I left office, there were unaccounted for stocks of biological and chemical weapons.

The power of our example is more important than the strength of our military.

I believe that a worthwhile life is defined by a kind of spiritual journey and a sense of obligation.

President Obama has offered a plan with 4 trillion dollars in debt reduction over a decade, with two and a half dollars of spending reductions for every one dollar of revenue increases, and tight controls on future spending. It's the kind of balanced approach proposed by the bipartisan Simpson-Bowles commission.

I don't mind the debates, they're good for America, but we shouldn't be out there attacking each other all the time.

I'm sure I spent more time in Texas than anybody else who had run for President recently.