"I always think of the future as being more interesting than the past."

"I think we’ve made a lot of progress in the last 30 years on the economic front, and negative progress on the political front."

"I'm not a big fan of incrementalism. I think you should always be striving for radical change."

"The Vietnam War was a noble cause that was lost in execution."

"The greatest danger for our civilization is that we may discover a technology that enables us to create a totalitarian state."