The prime minister will also have to listen more to Conservatives, like Ken Clarke, who have opposed Brexit. She will have to accept that the E.U. is going to exact a price for this decision: Britain cannot have its cake and eat it. If the country wants to remain in the single market, overwhelmingly in its interest, it will have to accept free movement of people, and as observed in the New York Times today, “Wouldn’t we be better off staying in the E.U., where the UK has lots of influence?” Buyers’ regret was evident in the Labour surge. It is no longer wishful thinking to believe such regret could yet lead to a second referendum, based this time on real terms rather than wretched lies.