George W. Bush: “I made it clear to the world that either you are with us, or you're against us.”

Violence and vitriol must be purged from the public square. Members of other political parties are not our enemies; they are our fellow citizens.

We are heartbroken by the loss of life and the agony so many are feeling.

You've showed the great strength of America through your work—and that is your good heart.

History will remember him as among the finest public servants of his generation – a patriot who brought integrity, high intelligence, and seriousness of purpose to every position.