Reentry in a Soyuz is like going over Niagara falls in a barrel on fire. When you realize you're still alive, it's the most fun and thrilling thing you've ever done.
Part of that quote can be attributed to astronaut Ron Garan. But the whole quote played behind the view of Kelly's landing capsule descending above the clouds under it's big orange and white parachute. What I find interesting is almost every astronaut that goes up, is profoundly affected by the experience: the frailty of Earth; the thin boundary where life can exist, the complete lack of visible political borders. Kelly's Russian partner, Mikhail Kornienko, said, "You put our two presidents in a capsule and send them up for a couple weeks, I bet alot of problems get solved."
