Marcus Brutus, one of the murderers of Julius Caesar, being in his tent during a night which was not very dark, towards the third hour of the night, beheld a monstrous and terrific figure enter. "Who art thou? a man or a God? and why comest thou here?" The spectre answered, "I am thine evil genius. Thou shalt see me at Philippi!" Brutus replied undauntedly, "I will meet thee there." And on going out, he went and related the circumstance to Cassius, who being of the sect of Epicurus, and a disbeliever in that kind of apparition, told him that it was mere imagination; that there were no genii or other kind of spirits which could appear unto men, and that even did they appear, they would have neither the human form nor the human voice, and could do nothing to harm us. Although Brutus was a little reassured by this reasoning, still it did not remove all his uneasiness. But the same Cassius, in the campaign of Philippi, and in the midst of the combat, saw Julius Caesar, whom he had assassinated, who came up to him at full gallop: which frightened him so much that at last he threw himself upon his own sword. Cassius of Parma, a different person from him of whom we have spoken above, saw an evil genius, who came into his tent, and declared to him his approaching death. Drusus, when making war on the Germans (Allemani) during the time of Augustus, desiring to cross the Elbe, in order to penetrate farther into the country, was prevented from so doing by a woman of taller stature than common, who appeared to him and said, "Drusus, whither wilt thou go? wilt thou never be satisfied? Thy end is near--go back from hence." He retraced his steps, and died before he reached the Rhine, which he desired to recross. St. Gregory of Nicea, in the Life of St. Gregory Thaumaturgus, says that, during a great plague which ravaged the city of Neocesarea, spectres were seen in open day, who entered houses, into which they carried certain death. After the famous sedition which happened at Antioch, in the time of the Emperor Theodosius, they beheld a kind of fury running about the town, with a whip, which she lashed about like a coachman who hastens on his horses. St. Martin, Bishop of Tours, being at Treves, entered a house, where he found a spectre which frightened him at first. Martin commanded him to leave the body which he possessed: instead of going out (of the place), he entered the body of another man who was in the same dwelling; and throwing himself upon those who were there, began to attack and bite them. Martin threw himself across his way, put his fingers in his mouth, and defied him to bite him. The demoniac retreated, as if a bar of red-hot iron had been placed in his mouth, and at last the demon went out of the body of the possessed, not by the mouth but behind.