David Mackay

As an astronaut, when you're getting ready to go out of that hatch, you know that's the pinnacle of both your career and your life. The view completely blows you away. The real challenge is getting past the excitement and getting focused and down to work.

I like people who don't accept boundaries. Like Florence Nightingale. And Napoleon or Louis XIV, though I'm not sure how much I'd have liked to meet them. I admire people who aren't circumscribed by circumstance.