"I've been saying for a long time that I'm hoping to find intelligent life in Washington. I'm reasonably sure there must be life in this solar system, on Mars or on Europa, and other places. I think life is probably going to be ubiquitous, though we still don’t have proof of that yet, and still less of intelligent life anywhere. But I hope that will be coming in the next decade or so through radio astronomy or, perhaps, the discovery of objects in space, which are obviously artificial. Astronomical engineering – that may the other thing to look for."