Not to wax nostalgic about the 1970s, but back then people got upset when they saw injustice. They got tired of seeing our air, land and water polluted. They were shocked when the Cuyahoga River in Ohio was polluted so badly it caught fire. And on one great day 20 million Americans marched all across this land. Politicians had no choice but to take notice.

And now that the Greatest Generation is getting older, I think it is the responsibility of all Americans to make sure we do our part for America's seniors. You have earned the best of America -- and we need to make sure you get the protection and health care you deserve.

That is what Americans do. We face a challenge - no matter how great - because we know that on the other side there is always hope.

George Bush's vision does not live up to the America I enlisted in the Navy to defend, the America I have fought for in the Senate, and the America that I hope to lead as president.

Assassination, kidnappings and suicide attacks have become too much the standard operating procedure in the Islamic world. So much so that the name of Islam itself has been diminished in the eyes of many people. It is the responsibility of all of us, and particularly those in the Islamic world who care about their religion, to rescue it from its increased association with violence.

Republican secretaries of state from Kissinger to Baker, Powell to Rice, President Bush, 71 United States Senators all supported President Obama's new START treaty, but not Mitt Romney.

I don't want to claim that God is on our side. As Abraham Lincoln told us, I want to pray humbly that we are on God's side.