IBill never realized that sex was the cause of it all. If the sun that morning had not been burning so warmly in the brassy sky of Phigerinadon II, and if he had not glimpsed the sugar-white and wine-barrel-wide backside of Inga-Maria Calyphigia, while she bathed in the stream, he might have paid more attention to his plowing than to the burning pressures of heterosexuality and would have driven