I will never relent in defending America - whatever it takes.

Humor can be a great way to lift spirits and relate with soon-to-be high school grads. Whether you're in need of a funny senior year quote for a card, your yearbook, or a gift, you can use this list of funny graduation quotes by famous leaders and comedians to get inspired. To those of you who received honors, awards and distinctions, I say well done. And to the C students, I say you too may one day be president of the United States.

The United States and rich countries cannot change Africa from within. It has to impose reform on Africa; it has to come from within.

We'll continue to speak out in a respectful way; never challenging somebody's love for America when you criticize their strategies or their point of view.

We will not waver, we will not tire, we will not falter, and we will not fail. Peace and freedom will prevail.

Washington is a town where there's all kinds of allegations. You've heard much of the allegations. And if people have got solid information, please come forward with it. And that would be people inside the information who are the so-called anonymous sources, or people outside the information - outside the administration.

The Iraqi regime is a threat of unique urgency. [...] It has developed weapons of mass death.