"One of the saddest lessons of history is this: If we've been bamboozled long enough, we tend to reject any evidence of the bamboozle. We're no longer interested in finding out the truth. The bamboozle…"

"If we are to survive, we must be willing to change."

"Every star in the sky is a sun, many with planets, and perhaps life."

"We make our world significant by the courage of our questions and the depth of our answers."

"The Earth is a very small stage in a vast cosmic arena."