Is there really a hell? Should we be good simply to avoid punishment in the life hereafter? Just asking these questions theoretically doesn't get us far, George F. Dole suggests, but examining the works of someone who has been there may help. Dole refers to Emanuel Swedenborg, the eighteenth-century Swedish scientist and statesman who over the last twenty-seven years of his life had the privileged status of an observer of non-physical worlds, including...