"I believe that we are alone in the universe, or that we are the only intelligent life."

"We are all driven by a desire to understand the universe."

"If aliens ever visit us, I think the outcome would be much as when Christopher Columbus first landed in America, which didn't turn out very well for the Native Americans."

"It is a matter of common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something."

"Both of us."