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.

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.

When you head on out to the Moon, in very short order, and you get a chance to look back at the Earth, that horizon slowly curves around in upon himself, and all of sudden you're looking at something that is very strange, but yet is very, very familiar, because you're beginning to see the Earth evolve.

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

Curiosity is the essence of human existence. 'Who are we? Where are we? Where do we come from? Where are we going?' I don't know. I don't have any answers to those questions. I don't know what's over there around the corner. But I want to find out.

Once I finally stepped on the moon, no matter what was to come of the next three days - or the rest of my life - nobody could take those steps from me. People ask how long will they be there, and I say forever, however long forever is, like my daughter’s initials that I scribbled in the sand [TDC for Tracy Dawn Cernan].

Curiosity is the essence of human existence.