I'm not able to go in with an act that I use month to month year to year all the time. It's constantly evolving and changing and that keeps me on my toes but certainly adds to the challenge.
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 build our defenses beyond challenge, lest weakness invite challenge. We will confront weapons of mass destruction, so that a new century is spared new horrors.
Whenever I look at the history of presidents I deeply admire - the one thing that I'm always struck by is persistence. It's a quality that's underrated. Being able to plough through, being able to stay buoyant in the face of challenges.
That's one of our biggest challenges is finding out how to do that. There are times when you have to scale back. You might be performing on a five-by-five stage in front of 12 people. That's an exaggeration but there are times when you have to turn the corner and do an acoustic set.
For we have always understood that when times change, so must we, that fidelity to our founding principles requires new responses to new challenges, that preserving our individual freedoms ultimately requires collective action.
Every day, there's that tension and the pressure. Each scene that you shoot is like getting to that next step, but there's still that mountain to climb. So it's not like one day is harder or one scene is harder. They are all equally challenging.
As a matter of fact, it's in our interests that we help reformers across the Middle East achieve their objectives. This is the fundamental challenge of the 21st century.
Difficulties and obstacles are God's challenges to faith. When hindrances confront us in the path of duty, we are to recognize them as vessels for faith to fill with the fullness and all-sufficiency of Jesus.
So long as I'm the president, we will. I clearly see the challenge. I see the challenge of what these threats pose to our homeland, and I see the challenge of what these threats pose to the world.