Don't be afraid of new arenas.

To make an embarrassing admission, I like video games. That's what got me into software engineering when I was a kid. I wanted to make money so I could buy a better computer to play better video games. Nothing like saving the world.

And we need things in life that are exciting and inspiring. It can't just be about solving some awful problem. There have to be reasons to get up in the morning.

If humanity doesn't land on Mars in my lifetime, I would be very disappointed.

There's a fundamental difference, if you sort of look into the future, between a humanity that is a space-faring civilization, that's out there exploring the stars...compared with one where we are forever confined to Earth until some eventual extinction event.

You need to live in a dome initially but over time you could terraform Mars to look like Earth and eventually walk around outside without anything on. ... So it's a fixer-upper of a planet.

I think there are more politicians in favor of electric cars than against. There are still some that are against, and I think the reasoning for that varies depending on the person, but in some cases, they just don't believe in climate change - they think oil will last forever.