I've always been more interested in organisms that can move on their own than in stationary plants. But when I canoe or hike along the edge of lakes or oceans and see trees that seem to be growing out of rock faces, I am blown away. How do they do it?

The failure of world leaders to act on the critical issue of global warming is often blamed on economic considerations.

The future doesn't exist. The only thing that exists is now and our memory of what happened in the past. But because we invented the idea of a future, we're the only animal that realized we can affect the future by what we do today.

If America wants to retain its position as a global power, its president must listen to the people and show strong leadership at this turning point in human history.

My security comes from the fact that I've never done a job for money.

There is little room for complacency, and it is important to guard against sporadic volatility in financial markets.

I have no problem with the financial industry inviting the Trojan Horse of blockchain technology into their walled garden. Because I know how powerful the technology is.

If you don't stay up with technology, you're gonna fall out of the loop and not make any money.