First and foremost, let us not conceal our pleasure: as Emmanuel Macron’s victory in France makes clear, life – even political life – is a great practical joker. And it may bring intense emotions and rekindled hopes, like those felt outside France when a man strode forward in the dimness of the square courtyard of the Louvre towards his destiny to the sound of the Ode to Joy, the anthem of a Europe “rejected” by the French people in a referendum twelve years earlier (see EUROPE...