Thinking about Ronald Reagan is hard because he eludes conventional categories. His younger son, Ron, just published a quizzical memoir, My Father at 100, that according to New York Times reviewer Michiko Kakutani “underscores the bafflement of his own children.” The author wrote, “His children, if they were being honest, would agree that he was as strange a fellow as any of us had ever met. Not darkly strange, mind you. In fact, he was so naturally sunny, so utterly without guile, so devoid of cynicism or pettiness as to create for himself a whole new category of strangeness.”