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.
It is impossible to remain indifferent to Japanese culture. It is a different civilisation where all you have learnt must be forgotten. It is a great intellectual challenge and a gorgeous sensual experience.
Throughout American history, there have been moments that call on us to meet the challenges of an uncertain world, and pay whatever price is required to secure our freedom.
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.
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.