I’d tell him about spelling tests and arithmetic, and he’d listen with the kind of attention most people reserve for church. He couldn’t read well. He’d gone only to the sixth grade before he had to work. But he never let me forget this one thing: “You may not be the smartest kid in that classroom,” he’d say, pointing a cracked finger at me, “but you study hard. Because the one thing nobody can take from you is what’s up here.” He’d tap my forehead, and his eyes would glint.