Had we eyes sharp enough, observes Cowper in a letter to Hayley, we should see the arrows of death flying in all directions, and account it a wonder that we and our friends escape them but a single day. Many years previously the poet had written to the same effect to Unwin,—that could we see at a glance of the eye what is passing every day upon all the roads in the kingdom, we should indeed find reason to be thankful for journeys performed in safety, and for deliverance from dangers we are not perhaps even permitted to see. “When in some of the high southern latitudes, and in a dark tempestuous night, a flash of lightning discovered to Captain Cook a vessel which glanced along close by his side, and which but for the lightning he must have run foul of, both the danger and the transient light that showed it were undoubtedly designed,” as Cowper is devoutly convinced, “to convey to him this wholesome instruction, that a particular Providence attended him, and that he was not only preserved from evils of which he had notice, but from many more of which he had no information or even the least suspicion.” It is noticeable, as Mr. de Quincey points out, that a danger which approaches, but wheels away—which threatens, but finally forbears to strike—is more interesting by much on a distant retrospect than the danger which accomplishes its mission. “The Alpine precipice, down which many pilgrims have fallen, is passed without much attention; but that precipice, within one inch of which a traveller has passed unconsciously in the dark, first tracing his peril along the snowy margin on the next morning, becomes invested with an attraction of horror for all who hear the story.” In another of his books, and the most celebrated of them all, the same impassioned master of English prose, recites the thoughts that arose within him, at a crisis in his youthful life, on the suggestive opening of that beautiful collect, “Lighten our darkness, we beseech thee, O Lord!” in which the great shadows of night are made symbolically significant—those great powers, night and darkness, that belong to aboriginal chaos, being made representative of the perils that, unseen, continually menace poor afflicted human nature. “With deepest sympathy I accompanied the prayer against the perils of darkness,—perils that I seemed to see, in the ambush of midnight solitude, brooding around the beds of sleeping nations; perils from even worse forms of darkness shrouded within the recesses of blind human hearts; perils from temptations weaving unseen snares for our footing.” As Marcello has it, in Beddoes’ tragedy, “Each minute of man’s safety he does walk A bridge, no thicker than his frozen breath, O’er a precipitous and craggy danger Yawning to death!”