"More wine?" "Hmm? Oh, yes, thank you. Sorry, I was--" "Thinking about mathematics, I wager. Prime numbers was it?" "No, just distracted. It's this blasted heat." "It is the longest day of the year." "Yes, but normally not so hot." "Especially here. You think this is hot, visit me in Syene sometime. You think it gets hot here... You would melt in Syene in the summer." "So I hear. I suppose it's the moderating influence of the ocean that keeps us cooler." "That, and we're closer to the Sun." "What?"