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!

We are a nation of immigrants. But we are also a nation of laws. It is wrong and ultimately self-defeating for a nation of immigrants to permit the kind of abuse of our immigration laws we have seen in recent years, and we must do more to stop it.

I ask that all Americans demonstrate in their personal and public lives... the high ethical standards that are essential to good character and to the continued success of our Nation.

A man is more than the sum of all the things he can do.

Without question, bicycling is an efficient, economical and environmentally sound form of transportation and recreation. Bicycling is a great activity for families, recreational riders and commuters. Hillary, Chelsea and I have bicycles.

The simple fact is that we must not-and we will not-surrender our borders to those who wish to exploit our history of compassion and justice.

I think that most small amounts of marijuana have been decriminalized in some places, and should be. We really need a re-examination of our entire policy on imprisonment...Our imprisonment policies are counterproductive.