If you go against someone, you say, you can't vote for these Democrats, they don't have good values, they're not good people, they're weak, they're spineless, they're don't love America, they're giving aid and comfort to Saddam Hussein, that's the kind of thing I think is bad for America, because it stops the voters from thinking. And any time you stop thinking in a free society you get in trouble.

For 60 years, Social Security has meant more than an ID number on a tax form; more than a monthly check in the mail. It reflects our deepest values - our respect for our parents and our belief that all Americans deserve to retire with dignity.

You know, by the time you become the leader of a country, someone else makes all the decisions. ... You may find you can get away with virtual presidents, virtual prime ministers, virtual everything.

Through scientific discovery and technological innovation, we enlist the forces of the natural world to solve many of the uniquely human problems we face - feeding and providing energy to agrowing population, improving human health, taking responsibility for protecting the environment and the global ecosystem, and ensuring our own Nation's security. Scientific discoveries inspire and enrich us, teaching us about the mysteries of life and the nature of the world.

The era of big government is over, but the era of big challenge is not. We need an era of big citizenship. There are many important people at this summit, but the most important title is 'citizen.' This is our republic. Let us keep it!

When you're president, you learn to act like you know what you're talking about. And it's a great skill.

The worst thing about not being president anymore is I was disoriented for three weeks because nobody every played a song when I walked in.