Being an entrepreneur and starting new companies require a lot of sacrifice. Sacrifice that you have to make. Because in order to be really successful, your company becomes your life. And then you have to really dedicate your time and energy fully to this endeavor that you start.

It is a very naive view to think that the resources and conditions on earth would last forever. Our race has to take necessary steps to be able to develop the technology necessary to live on other planets and moons and to reach to farther corners of the galaxy.

You have to find ways of integrating what you like into your business life. And it's difficult at times, but I think over time with experience, you learn how to do it.

One of the things I do when I'm very stressed out and I can't get out and I need to do something, I just close my eyes and try to remember what it was like to be in space and to float around. And that sort of brings back all of those good sensations and good memories, and it helps me to get through the day.

I wasn't frightened going to outer space. I'd been living this in my head for many, many years, so I sort of had played all of these scenarios of flying into space and seeing earth. I think I was very prepared for it. It was almost a completely joyful, very happy, very exciting experience, and I didn't have time or any desire to think about what things could go wrong.

I don't like to just have a repetitive life where I do the same thing over and over. I love to be able to learn something new, explore something new.

If people can see Earth from up here, see it without those borders, see it without any differences in race or religion, they would have a completely different perspective. Because when you see it from that angle, you cannot think of your home or your country. All you can see is one Earth...