"I felt ill the other day, but all they had to do was to turn me off, and then back on again."

"The universe is not just out there, it's in here."

"I believe alien life is quite common in the universe, although intelligent life is less so. Some say it has yet to appear on planet Earth."

"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."

"The human race is just a chemical scum on a moderate-sized planet, orbiting around a very average star in the outer suburb of one among a hundred billion galaxies."