My childhood dreams were focused on being part of the effort to make humanity a multiplanetary species.

Research shows that the wealthier, more educated, and healthier a nation, the less violence and civil unrest among its populace, and the less likely that unrest will spread across its borders.

Go and try to start your own government in the United States today and you'll be squashed very quickly.

The world's biggest problems are the world's biggest business opportunities.

When faced without a challenge, make one

Every generation feels it has the problems that will destroy it. That's because we can perceive them a long time before we have the ability to fix them.

My father, who grew up picking olives on the Greek island of Lesbos, was a doctor. So my family expected me to become a physician.