Schwedenborg, the son of a Swedish clergyman of the name of Schwedberg, ennobled as Schwedenborg, was, up to the year 1743, which was the fifty-fourth of his age, an ordinary man of the world, distinguished only in literature, having written many volumes of philosophy and science, and being Professor in the Mineralogical school, where he was much respected. On a sudden, in the year 1743, he believed himself to have got into a commerce with the world of spirits, which so fully took possession of his thoughts, that he not only published their revelations, but was in the habit of detailing, with the greatest equanimity, his daily chat with them. Thus he says, "I had a conversation the other day on that very point with the Apostle Paul," or with Luther, or some other dead person. Schwedenborg continued in what he believed to be daily communion with spirits till his death, in 1772. He was, without doubt, in the fullest degree convinced of the reality of his spiritual commerce. So in a letter to the Wirtemburg prelate, Oetinger, dated November 11, 1766, he uses the following words:--"If I have spoken with the Apostles? To this I answer, I conversed with St Paul during a whole year, particularly on the text, Romans iii. 28. I have three times conversed with St John, once with Moses, and a hundred times with Luther, who allowed that it was against the warning of an angel that he professed '_fidem solam_,' and that he stood alone upon the separation from the Pope. With angels, finally, have I these twenty-two years conversed, and converse daily. "Of the angels," he says, "they have human forms, the appearance of men that I have a thousand times seen; for I have spoken with them as a man with other men, often with several together; and have seen nothing in the least to distinguish them from ordinary men." [They had evidently just the appearance of Nicolai's visitors.] "Lest any one should call this an illusion, or imaginary perception, it is to be understood that I am accustomed to see them, when perfectly myself wide awake, and in full exercise of my observation. The speech of an angel or of a spirit sounds like, and as loud as, that of a man, but it is not heard by the bystanders; the reason is, that the speech of an angel or a spirit finds entrance first into a man's thoughts, and reaches his organs of hearing from within outwards." This is indeed _cum ratione insanire_! how just an analysis of the illusion, when he is most deceived by it! "The angels who converse with men, speak not in their own language, but in the language of men, and likewise in other languages which are inwardly known to man, not in languages which he does not understand." Schwedenborg here took up the angels, and to explain their own ideas to them observed, that they most likely appeared to speak his mother tongue, _because, in fact_, it was not they who spoke, but himself by their suggestion. The angels held out, however, and went away unconvinced.