The following legend is delivered as having been told by St. Austin to Eradius: -

'There was a physician of Carthage, who was a sceptic regarding immortality and the soul's separate existence. It chanced one night that this man, Gena-dius by name, dreamed of a beautiful city. On the second night, the youth who had been his guide reappeared, and asked if Genadius remembered him; he answered yes, and also his dream. "And where," said the apparition, "were you then lying?" "In my bed, sleeping." "And if your mind's eye, Genadius, surveyed a city, even while your body slept, may not this pure and active spirit still live, and observe, and remember, even though the body may be shapeless and decayed within its sepulchre?" Genadius, convinced, abandoned his heresy, and ever after stood firm in the Catholic faith.' - De Dictis et Factis Memorabilibus.