Here I am at the turn of the millennium and I'm still the last man to have walked on the moon, somewhat disappointing. It says more about what we have not done than about what we have done.

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.

The mass gross absence of sound in space is more than just silence.

People try to typecast astronauts as heroic and superhuman. We're only human beings.

We leave as we came, and, God willing, as we shall return, with peace and hope for all mankind.

I do believe there is life in outer space. Mathematically, there has to be, and if you believe as I do that there is a creator of the universe, then how can we be so arrogant to believe he created life here and nowhere else?

Curiosity is the essence of human existence.