I would like people to understand the rationale for my embryonic stem cell research decision and how the process became distorted over time.

I call upon all nations to do everything they can to stop these terrorist killers. Thank you. Now watch this drive.

Even grief recedes with time and grace. But our resolve must not pass. Each of us will remember what happened that day, and to whom it happened. We'll remember the moment the news came -- where we were and what we were doing. Some will remember an image of a fire, or a story of rescue. Some will carry memories of a face and a voice gone forever.

I think that the vice president is a person reflecting a half-glass-full mentality.

Our long-term security depends on our deep faith in liberty. And we'll continue to promote freedom around the world.

Other Republican candidates may retort to personal attacks and negative ads.

By heritage and by choice, the United States of America will make that stand.