No matter how advanced our economy might be, no matter how sophisticated our equipment becomes, for the foreseeable future we will still depend on fossil fuels.
And one of the challenges, of course, is to convince people that Muslims would like to be free, that there's other people other than people in Britain and America that would like to be free in the world.
A failed Iraq in the heart of the Middle East will provide safe haven for terrorists and extremists. It will embolden those who are trying to thwart the ambitions of reformers.
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.
Some have argued that confronting the threat from Iraq could detract from the war against terror. To the contrary, confronting the threat posed by Iraq is crucial to winning the war on terror.
Catholic schools carry out a great mission, to serve God by building knowledge and character... By teaching the word of God, you prepare your students to follow a path of virtue.
Terrorists and their allies believe the Universal Declaration of Human Rights and the American Bill of Rights and every charter of liberty ever written are lies to be burned and destroyed and forgotten.
Look, this is a man, he's got great numbers. He talks about numbers. I'm beginning to think not only did he invent the Internet, but he invented the calculator. It's fuzzy math. It's a scaring - trying to scare people in the voting booth. Under my tax plan, that he continues to criticize, I set a third - the federal government should take no more than a third of anybody's check.
If we're an arrogant nation, they'll resent us; if we're a humble nation, but strong, they'll welcome us. And our nation stands alone right now in the world in terms of power, and that's why we've got to be humble, and yet project strength in a way that promotes freedom.
Golf is a game of integrity. And golf is a game of forgiveness. I think the high standards of golf remind people of how lucky they are, or how fortunate they are, to be able to play the game.