What would happen is that people like Geroge and Alyx would grow old and die chasing a dream. Although there were probably worse things to do with one's life.

Of course, they (i. e., demons) had always been observed with some regularity, but that could usually be ascribed to an overabundance of piety or wine or imagination. Take your pick.

So long as you believe in some truth you do not believe in yourself. You are a servant. A man of faith.

All of the important things ... will turn out to be universally shared. It's why there will be no true aliens.

Technological civilizations don't last long. You're all right until you get a printing press. Then a race starts between technology and common sense. And maybe technology always wins.

If you're right, and nobody really cares what's out there, I wonder whether we're even worth saving.

Intelligence is like pornography. I can't define it, but I know if when I see it.