As a youngster, I read of Buck Rogers and Flash Gordon. As a student, I wrote English reports on science fiction. And as a fighter pilot, I observed the selection of the Mercury astronauts. All this was fascinating, but I really didn't think I would ever be a part of it. It was only when my good friend Ed White was selected as a Gemini astronaut that I decided to join NASA as part of the Apollo program.

Look at what Silicon Valley has done - the advance of computers.

I think the public needs to be reminded just how much inspiration and intention was given throughout the world to be bold, to send human beings to the moon in the '60s and the '70s. It's important now to bring together the nations that weren't able to do it then and help them do it. We need to move forward.

I participated with great honor in becoming one of the first to land on the moon, and now I am devoting and have devoted many years of my life to enabling Americans to lead international nations to permanence on the planet Mars.

I am definitely not rich.

Kids, help your parents if they don't know how to use a smartphone.

There's a tremendously satisfying freedom associated with weightlessness. It's challenging in the absence of traction or leverage, and it requires thoughtful readjustment. I found the experience of weightlessness to be one of the most fun and enjoyable, challenging and rewarding, experiences of spaceflight. Returning to Earth brings with it a great sense of heaviness, and a need for careful movement. In some ways it's not too different from returning from a rocking ocean ship.