" For us, people of the twenty-first century, it is obvious that storms have the power to inspire phantastical visions, but during the tenth and eleventh centuries, this was not how it was, and storms were viewed as the intervention of immanent powers, spirits, or the dead. If the dead per-son could intervene this way with the elements, he was necessarily connected to the fertility of the soil and to the fecundity and the well-being of grazing animals. Everything fit together in that time's mind-set. "

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