" For a Westerner living today, it is hard to imagine that ancient cultures were incapable of even conceiving the notion of nothingness and that this mental category was simply absent from their world. This was the case, however, in the Middle Ages, and most particularly in the Germanic world. There is also something else: the idea of temporality that we have manufactured, of how it is established, of its total cessation, as we all know, is something that exclusively haunts the modern mentality. History, as a science, would not have assumed the astonishing importance it has today without this temporality. The Völuspá, the gem of the Poetic Edda, introduces history into its story of the mythic events of the world with the battle of the Aesir against the Vanir, but Ragnarok, which it describes in apocalyptic terms, is not viewed even for an instant as an ending. To the contrary, it is immediately followed by a universal regeneration that relaunches the destinies of a primordial couple eloquently named Li Life and Liffthrasir Undying or Greedy to Live. "

― Claude Lecouteux , The Return of the Dead: Ghosts, Ancestors, and the Transparent Veil of the Pagan Mind