I woke one night to find him staring at the ceiling, his profile lit by the glow of streetlights outside. He looked vaguely troubled, as if he were pondering something deeply personal. Was it our relationship? The loss of his father? “Hey, what’re you thinking about over there?” I whispered. He turned to look at me, his smile a little sheepish. “Oh,” he said. “I was just thinking about income inequality.