'Leonardo da Vinci,' he replied, 'has this noble sentence: "The hope and desire of returning home to one's former state is like the moth's desire for the light; and the man who with constant longing awaits each new month and new year, deeming that the things he longs for are ever too late in coming, does not perceive that he is longing for his own destruction." How, then, can the pathway which will lead us into the heart of God be other than dangerous? why should you, who are no materialist, cherish the continuity and order of the world as those do who have only the world? You do not value the writers who will express nothing unless their reason understands how it will make what is called the right more easy; why, then, will you deny a like freedom to the supreme art, the art which is the foundation of all arts? Yes, I shall send out of this chapel saints, lovers, rebels and prophets: souls who will surround themselves with peace, as with a nest made with grass; and others over whom I shall weep. The dust shall fall for many years over this little box; and then I shall open it; and the tumults, which are, perhaps, the flames of the last day, shall come from under the lid.' I did not reason with him that night, because his excitement was great and I feared to make him angry; and when I called at his house a few days later, he was gone and his house was locked up and empty. I have deeply regretted my failure both to combat his heresy and to test the genuineness of his strange book. Since my conversion I have indeed done penance for an error which I was only able to measure after some years. II I was walking along one of the Dublin quays, on the side nearest the river, about ten years after our conversation, stopping from time to time to turn over the books upon an old bookstall, and thinking, curiously enough, of the terrible destiny of Michael Robartes, and his brotherhood; when I saw a tall and bent man walking slowly along the other side of the quay. I recognized, with a start, in a lifeless mask with dim eyes, the once resolute and delicate face of Owen Aherne. I crossed the quay quickly, but had not gone many yards before he turned away, as though he had seen me, and hurried down a side street; I followed, but only to lose him among the intricate streets on the north side of the river. During the next few weeks I inquired of everybody who had once known him, but he had made himself known to nobody; and I knocked, without result, at the door of his old house; and had nearly persuaded myself that I was mistaken, when I saw him again in a narrow street behind the Four Courts, and followed him to the door of his house.