Part of our essential humanity is paying respect to what God gave us and what will be here a long time after we're gone.

There is no longer a clear, bright line dividing America's domestic concerns and America's foreign policy concerns...If we want America to stay on the right track, if we want other people to be on that track and have the chance to enjoy peace and prosperity, we have no choice but to try to lead the train.

The more children see of violence, the more numb they are to the deadly consequences of violence. Now, video games like 'Mortal Kombat,' 'Killer Instinct,' and 'Doom,' the very game played obsessively by the two young men who ended so many lives in Littleton, make our children more active participants in simulated violence.

I did a lot of work on energy efficiency at the White House. By the time I left we had taken the equivalent of six hundred cars a year off the road in reduced greenhouse gas emissions just in the White House complex.

We should, all of us, be filled with gratitude and humility for our present progress and prosperity. We should be filled with awe and joy at what lies over the horizon. And we should be filled with absolute determination to make the most of it.

We are a people of faith. We have been so secure in that faith that we have enshrined in our Constitution protection for people who profess no faith. And good for us for doing so. That is what the First Amendment is all about.

Being president is like running a cemetery: you've got a lot of people under you and nobody's listening.