Swedenborg entertained the conviction that the world of spirits held communion with certain favoured persons in this life; and up to the period of his death, in the year 1772, he pretended to have intercourse with spirits of celestial origin and those of deceased men. Swedenborg frequently narrated the wonders of other worlds, and particularly those of the infernal regions.

There are endless accounts of spirits appearing to men on earth. Here are a few of them:—Marcus Brutus, one of the murderers of Julius Cæsar, being one night in his tent, saw a monstrous figure coming in about the third hour of night. Brutus immediately cried out, "What art thou, a man or a god? and why art thou come hither?" The spectre answered, "I am thy evil genius; thou shalt see me at Philippi." Brutus, with feigned calmness, answered, "I will meet thee there." Disordered, however, in body, and disturbed in mind, Brutus related the affair to Cassius, who, being of the sect of Epicurus, told Brutus that what he supposed he saw was nothing more than mere fancy; that there were no such things as genii or other spirits which could appear to man; that even if they should appear, they could not assume a human shape or voice, and had no power over men. Though Brutus was somewhat encouraged by what Cassius said, he could not entirely overcome his uneasiness. In the midst of the battle of Philippi, Brutus thought he saw Julius Cæsar, whom he had assassinated, riding to him at full speed, which so terrified him that he fell upon his own sword. Cassius also fell there under the hand of his freedman Pindarus.

Pausanius writes that, four hundred years after the battle of Marathon, there were heard, in the place where it was fought, the neighing of horses, and the shouts of soldiers animating one another to the fight. Plutarch also speaks of spectres seen and dreadful howlings heard in the public baths, where several citizens of Chœronea, his native town, had been murdered. He says that the inhabitants had been obliged to shut up these baths, but that, notwithstanding this precaution, great noises continued to be heard, and dreadful spectres were frequently seen by the neighbours. Plutarch frequently makes mention of spectres and apparitions; particularly he says, that, in the famous battle above alluded to, several soldiers saw the apparition of Theseus fighting for the Greeks and against the Persians.

It is recorded in Socrates, that after the defeat of the Athenian army under the prætor Laches, as he was flying in company with the Athenian general, and came to a place where several roads met, he refused to go the same road that the others took, and the reason being asked him, he answered that his genius, or familiar spirit, who frequently attended him, dissuaded him from it; and the event justified the precaution, for all those who went a different way from him were killed or made prisoners by the enemy's cavalry.

When Bruno, Archbishop of Wirtzburgh, a short time before his sudden death, was sailing with Henry III., he descried a terrific spectre standing upon a rock which overhung the foaming waters, by whom he was thus hailed; "Ho! bishop, I am thy evil genius. Go whither thou choosest, thou art and shalt be mine. I am not now sent for thee, but soon thou shalt see me again."

A house at Athens was haunted by a spirit which roamed through the apartments at night, seemingly dragging a heavy chain after it. Athenodorus, the philosopher, hired the house, with the intention of discovering the cause of so much alarm to the inmates. One night, while pursuing his studies, he was startled by hearing what seemed to be the rattling of chains. On looking up he beheld a spectre enter his apartment and make a sign to him to follow. The philosopher rose and followed the ghost, which went into the courtyard and disappeared. The philosopher marked the spot where the spectre vanished, and on the following day caused a search to be made. The result was that the skeleton of a man in chains was discovered. The bones were publicly burned, and the ghost never again appeared.

A lady, while going along a dreary path one evening to see a sick child, was frightened by a strange sight before her. The mysterious object represented her friend's child dead, and wrapt in its winding sheet, floating up in the air heavenwards. It is almost needless to say that just about that time the sick child died.

Many years ago, when a ship of war was one night off the African coast, the officer on watch became deeply affected in a manner he could not explain, and became partially insensible, and could not rouse himself before a cold hand touched him. He then beheld a white figure walking away. It turned round, and in the face he beheld the features of a brother in England. The spectre, after remaining a few seconds, vanished. On arriving in Great Britain, the officer discovered that his brother died on the very night he saw the apparition.

A ghost story was related for the first time about twenty years ago, of the ghost of a murdered man appearing in the colony of New South Wales. A farmer named Fisher, in the prime of life and unmarried, suddenly disappeared, leaving £4000 worth of property behind him. A neighbour called Smith reported that Fisher had gone to England, and that he was authorized to act for him in all business matters during his absence. The statement was received as a fact; but a strange circumstance changed public opinion. An old man named Ben Weir, who had a small farm near that of Fisher, was returning home one night from Sydney, when he beheld farmer Fisher with a severe wound on the forehead, and blood flowing from it. When Weir got within a few paces of the figure, it disappeared. He could not rightly comprehend the meaning of all this, and did not mention what he had seen, lest his neighbours would say he had been drunk. A few nights afterwards he had occasion to pass the spot where Fisher had appeared, and there again the farmer stood before him as before. Weir could not now remain silent. He went to a justice of the peace and told his tale. At first the justice would not credit his informant, but subsequently he instructed an inquiry to be made. Marks of blood were discovered at the spot where the ghost appeared, and in a pond, a little distance off, Fisher's dead body was found. Smith was consequently arrested, and tried before the late Sir Francis Forbes. His guilt was established, and he was sentenced to death. Before his execution he confessed that he alone had murdered Fisher at the very spot where Weir saw the murdered man's ghost.

An account is given of a house that was haunted at Bow last century. A young girl declared one morning that a cold hand had been laid on her about midnight. This proved to be the hand of death. She sickened, and before many suns went down she lay in her winding sheet. Then followed a series of strange annoyances, which gave rise to the report that the house was haunted. So dreadfully were the inmates frightened, that though the house contained many apartments upstairs and downstairs, they took refuge in a small room on the ground floor. Night and day strange noises were heard, and furniture and other articles were flung about by unseen hands. A gentleman, a friend of the family, hearing of what was going on, engaged to solve the mystery. Entering an apartment upstairs, he observed the furniture moving about the floor, although no living being could be seen. Stones and bricks were thrown through the window; a staff danced round the room; dishes were thrown at his head. He examined every hole and corner, but could not discover any person or thing by which the articles were made to move. Fearing the presence of evil spirits, he hastened out, closing the door after him. It was instantly opened, and chairs, stools, candlesticks, and dishes were hurled after him. The worst had not come. While all the family were standing in amazement, a small boiler with hot water moved from one side of the grate to the other, the poker and tongs stood up and exchanged places, the pots and pans clattered loudly, and a small table was lifted into the air. A witch residing in the neighbourhood being suspected of causing the mischief, a noted wizard undertook to solve the mystery. He ordered the dancing staff to be burned. When it was blazing up, a suspected witch entered in great agony. She asked for a drink of water to quench her burning thirst. Those cognisant of the facts concluded that the perpetrator of the mischief was discovered. She was apprehended, tried, and acquitted for want of sufficient evidence. As she left the court she was heard to mutter, "I shall be revenged." She kept her word. The following night, the annoyance, which had ceased during her incarceration, recommenced with double fury. The inmates of the house, who had previously escaped without bodily injury, were struck by invisible persons, who, as often as they dealt their blows, shouted, "Take that;" while at the same time the furniture was knocked against the walls and broken to pieces. The inmates fled for their lives, and the house was shut up for many years, none daring to occupy the haunted house.