I do hope your dreams were quiet last night. Personally, I found the stars rather loud. Anyway, here’s the unthinkable thought that I’d like to share with you on this occasion. Just a snippet of dialogue:

“I am not real. But neither are most things you believe in. Shall we continue?”

The picture? I have wondered, for years, how non-Euclidean geometry might appear. I decided that to mortal minds, “an angle which was acute, but behaved as if it ...