And in all actual vision there is gradation; from what is so common, premonition, to what is not common, prescience, and to what is rare, revelation. Thus when the labourers on Iona looked up from the fields and saw the aged abbot whom they so loved, borne in a wagon to give them benediction at seed-sowing, many among them knew that they would not see Colum again, and Colum knew it, and so shared that premonition. And when, many years before, he and the abbot Comgell, returning from a futile conference of the kings Aedh and Aidan, rested by a spring, concerning which Colum said that the day would come when it would be filled with human blood, "because my people, the Hy-Neill, and the Pictish folk, thy relations according to the flesh, will wage war by this fortress of Cethirn close by," Comgell learned, through Colum's foreknowledge, of what did in truth come to pass. Again, when Colum bade a brother go three days thence to the sea-shore on the west side of Iona, and lie in readiness to help "a certain guest, a crane to wit, beaten by the winds during long and circuitous and aerial flights, which will arrive after the ninth hour of the day, very weary and sore distressed," and bade him to lift it and tend it lovingly for three days and three nights till it should have strength to return to "its former sweet home," and to do this out of love and courtesy because "it comes from our fatherland"--and when all happens and is done as the saint foretold and commanded, then we have revelation, the vision that is absolute, the knowledge that is the atmosphere of the inevitable. It would take a book indeed to tell all the stories of Columba's visionary and prophetic powers. That I write at this length concerning him, indeed, is because he is himself Iona. Columba is Christian Iona, as much as Iona is Icolmkill. I have often wondered (because of a passage in Adamnan) if the island be not indeed named after him, the Dove: for as Adamnan says incidentally, the name Columba is identical with the Hebrew name Jonah, also signifying a Dove, and by the Hebrews pronounced Iona. It is enough now to recall that this man, so often erring but so human always, in whose life we see the soul of Iona as in a glass, is become the archetype of his race, as Iona is the microcosm of the Gaelic world. That he came into this life heralded by dreams and visions, that from his youth onward to old age he knew every mystery of dream and vision, and that before and after his death his soul was revealed to others through dreams and visions, is but an added hieratic grace: yet we do well to recall often how these dreams before and these visions after were angelical, and nobly beautiful: how there was left of him, and to his little company, and to us for remembrance, that last signal vision of a blaze of angelic wings, more intolerable than the sun at noon, the tempestuous multitude trembling with the storm of song.