I am mindful of the difference between the executive branch and the legislative branch. I assured all four of these leaders that I know the difference, and that difference is they pass the laws and I execute them.

The best way to defend America in this world we live in is to stay on the offense.

The deliberate and deadly attacks which were carried out yesterday against our country were more than acts of terror. They were acts of war.

To those of you who received honours, awards and distinctions, I say, well done. And to the C students, I say, you too can be president of the United States.

God's signs are not always the ones we look for. We learn in tragedy that his purposes are not always our own. Yet the prayers of private suffering, whether in our homes or in this great cathedral, are known and heard, and understood.

Somebody accused us of hiring him and putting him there. He was a classic.

So long as I'm the president, my measure of success is victory -- and success.