Note Book of an English Opium-Eater by De Quincey, Thomas, 1785-1859

But who meantime was the victim, to whose abode he was hurrying? For surely he never could be so indiscreet as to be sailing about on a roving cruise in search of some chance person to murder? Oh, no: he had suited himself with a victim some time before, viz., an old and very intimate friend. For he seems to have laid it down as a maxim--that the best person to murder was a friend; and, in default of a friend, which is an article one cannot always command, an acquaintance: because, in either case, on first approaching his subject, suspicion would be disarmed: whereas a stranger might take alarm, and find in the very countenance of his murderer elect a warning summons to place himself on guard. However, in the present ease, his destined victim was supposed to unite both characters: originally he had been a friend; but subsequently, on good cause arising, he had become an enemy. Or more probably, as others said, the feelings had long since languished which gave life to either relation of friendship or of enmity. Marr was the name of that unhappy man, who (whether in the character of friend or enemy) had been selected for the subject of this present Saturday night's performance. And the story current at that time about the connection between Williams and Marr, having (whether true or not true) never been contradicted upon authority, was, that they sailed in the same Indiaman to Calcutta; that they had quarrelled when at sea; but another version of the story said--no: they had quarrelled after returning from sea; and the subject of their quarrel was Mrs. Marr, a very pretty young woman, for whose favor they had been rival candidates, and at one time with most bitter enmity towards each other. Some circumstances give a color of probability to this story. Otherwise it has sometimes happened, on occasion of a murder not sufficiently accounted for, that, from pure goodness of heart intolerant of a mere sordid motive for a striking murder, some person has forged, and the public has accredited, a story representing the murderer as having moved under some loftier excitement: and in this case the public, too much shocked at the idea of Williams having on the single motive of gain consummated so complex a tragedy, welcomed the tale which represented him as governed by deadly malice, growing out of the more impassioned and noble rivalry for the favor of a woman. The case remains in some degree doubtful; but, certainly, the probability is, that Mrs. Marr had been the true cause, the _causa teterrima_, of the feud between the men. Meantime, the minutes are numbered, the sands of the hour-glass are running out, that measure the duration of this feud upon earth. This night it shall cease. To-morrow is the day which in England they call Sunday, which in Scotland they call by the Judaic name of 'Sabbath.' To both nations, under different names, the day has the same functions; to both it is a day of rest. For thee also, Marr, it shall be a day of rest; so is it written; thou, too, young Marr, shalt find rest--thou, and thy household, and the stranger that is within thy gates. But that rest must be in the world which lies beyond the grave. On this side the grave ye have all slept your final sleep.