Him: (A sudden question inserted into the middle of a long, wearying, stream of consciousness monologue concerning aliens, or transporters, or some such.) Do you want to know something?
Me: Not really. I prefer not knowing anything. Ignorance is bliss they say.
Him: (Continues dissertation as if I hadn't said a word.)
Update: Continuing on, two hours later, we have turned to the subject of bacteria and viruses, which he proceeds to tie back into the alien discussion via War of the Worlds (the old version).
Him: Why did God cause the Martians to die?
Me: God? There's no such person.
Him: You just can't see him.
Me: (Laughing too hard to explain to him what's wrong with that argument.)