I thought about Abdalati's comments again this morning, and about how far we've come in these efforts — thanks in no small part to the shuttle, of course. So I decided to turn the flawless final shuttle launch into an exclamation point, not a sign of despair. There is still so much more to come. And I remembered this quote, which I've cited in the past, from Edwin Hubble, whose eponymous space telescope never fails to amaze. I remain inspired.