One day in April—a clear, blue day when there were crocuses in bloom—Jack Hawthorne ran over and killed his brother, David. Even at the last moment he could have prevented his brother’s death by slamming on the tractor brakes, easily in reach for all the shortness of his legs; but he was unable to think, or, rather, thought unclearly, and so watched it happen, as he would again and again watch it happen in his mind, with nearly undiminished intensity and clarity, all his life. The younger brother was riding, as both of them knew he should not have been, on the cultipacker, a two-ton implement lumbering behind the tractor, crushing new-plowed ground. Jack was twelve, his brother, David, seven. The scream came not from David, who never got a sound out, but from their five-year-old sister, who was riding on the fender of the tractor, looking back. When Jack turned to look, the huge iron wheels had reached his brother’s pelvis. He kept driving, reacting as he would to a half-crushed farm animal, and imagining, in the same stab of thought, that perhaps his brother would survive. Blood poured from David’s mouth.