Today, we are on a path of decay. We are seeing the book close on five decades of accomplishment as the leader in human space exploration.

As I step off at the surface at Taurus-Littrow, I'd like to dedicate the first step of Apollo 17 to all those who made it possible.

Nobody can take those footsteps I made on the surface of the moon away from me.

Curiosity is the essence of human existence.

Yes, I am the last man to have walked on the moon, and that's a very dubious and disappointing honor. It's been far too long.

I've been asked about UFOs and I've said publicly I thought they were somebody else, some other civilization.

Perhaps the two greatest moments of my life were standing on the moon and being outside of the room when my granddaughter was born! We tend not to remember the worst.