The history of exploration has never been driven by exploration. But Columbus himself was a discoverer. So was Magellan. But the people who wrote checks were not. They had other motivations. And there's Columbus - he couldn't even get Italy to pay for his voyage so he has to go to Spain.

If you seek only easy problems to solve, then ultimately, there'll be nothing about you to distinguish yourself from others.

Dinosaurs are extinct today because they lacked opposable thumbs and the brainpower to build a space program.

Curiosity is missing. Curiosity in particular is something that the system, not only the educational system but, the parental... what you do as a parent at home.

I have thoughts every day that are themselves tweets.

I'm a little fatigued of adults saying we've got to worry about the kids. And these are the same adults that don't know science and are running things and wielding resources and legislation.

The only accounting we had of the origins and the structure of nature was Biblical Genesis.