Evodius asks himself diverse questions on this recital: If the soul on quitting its (mortal) body does not retain a certain subtile body, with which it appears, and by means of which it is transported from one spot to another? If the angels even have not a certain kind of body?--for if they are incorporeal, how can they be counted? And if Samuel appeared to Saul, how could it take place if Samuel had no members? He adds, "I remember well that Profuturus, Privatus and Servitus, whom I had known in the monastery here, appeared to me, and talked with me after their decease; and what they told me, happened. Was it their soul which appeared to me, or was it some other spirit which assumed their form?" He concludes from this that the soul is not absolutely bodiless, since God alone is incorporeal.[351] St. Augustine, who was consulted on this matter by Evodius, does not think that the soul, after the death of the body, is clothed with any material substantial form; but he confesses that it is very difficult to explain how an infinite number of things are done, which pass in our minds, as well in our sleep as when we are awake, in which we seem to see, feel, and discourse, and do things which it would appear could be done only by the body, although it is certain that nothing bodily occurs. And how can we explain things so unknown, and so far beyond anything that we experience every day, since we cannot explain even what daily experience shows us.[352] Evodius adds that several persons after their decease have been going and coming in their houses as before, both day and night; and that in churches where the dead were buried, they often heard a noise in the night as of persons praying aloud. St. Augustine, to whom Evodius writes all this, acknowledges that there is a great distinction to be made between true and false visions, and that he could wish he had some sure means of discerning them correctly. The same saint relates on this occasion a remarkable story, which has much connection with the matter we are treating upon. A physician named Gennadius, a great friend of St. Augustine's, and well known at Carthage for his great talent and his kindness to the poor, doubted whether there was another life. One day he saw, in a dream, a young man who said to him, "Follow me;" he followed him in spirit, and found himself in a city, where, on his right hand, he heard most admirable melody; he did not remember what he heard on his left.