Building one space station for everyone was and is insane: we should have built a dozen.

We should not have assumed that a political space station could be built.

A space station is a rangy monstrosity, a giant erector set built by a madman.

If we're going to complete the space station, we're going to need the shuttle. It's going to take a lot of resources.

When I did my spacewalks, it was during space station construction. So the shuttle was docked to the fledgling ISS at the time. So we would always stay tethered.

CASIS has to succeed because for it not to succeed would be a huge setback for the International Space Station program.