I saw someone reading The Selfish Gene on an airplane the other day, and a similar thought came to mind. I thought, "Ah, I should say hello to this person when we get off the plane. Failing that, give the official rationalist nod of affirmation. Go science!" (I missed the person leaving while trying to get to my book bag in the overhead compartment).

After, I decided that I would have had a similar urge to express my admiration to anyone I saw reading any Dawkins book, except the God Delusion. I'm happy to have a conversation with a fellow science lover. Not nearly as much with a fellow God hater.