In writing _Phineas Finn_ I had constantly before me the necessity of progression in character,--of marking the changes in men and women which would naturally be produced by the lapse of years. In most novels the writer can have no such duty, as the period occupied is not long enough to allow of the change of which I speak. In _Ivanhoe_, all the incidents of which are included in less than a month, the characters should be, as they are, consistent throughout. Novelists who have undertaken to write the life of a hero or heroine have generally considered their work completed at the interesting period of marriage, and have contented themselves with the advance in taste and manners which are common to all boys and girls as they become men and women. Fielding, no doubt, did more than this in _Tom Jones_, which is one of the greatest novels in the English language, for there he has shown how a noble and sanguine nature may fall away under temptation and be again strengthened and made to stand upright. But I do not think that novelists have often set before themselves the state of progressive change,--nor should I have done it, had I not found myself so frequently allured back to my old friends. So much of my inner life was passed in their company, that I was continually asking myself how this woman would act when this or that event had passed over her head, or how that man would carry himself when his youth had become manhood, or his manhood declined to old age. It was in regard to the old Duke of Omnium, of his nephew and heir, and of his heir's wife, Lady Glencora, that I was anxious to carry out this idea; but others added themselves to my mind as I went on, and I got round me a circle of persons as to whom I knew not only their present characters, but how those characters were to be affected by years and circumstances. The happy motherly life of Violet Effingham, which was due to the girl's honest but long-restrained love; the tragic misery of Lady Laura, which was equally due to the sale she made of herself in her wretched marriage; and the long suffering but final success of the hero, of which he had deserved the first by his vanity, and the last by his constant honesty, had been foreshadowed to me from the first. As to the incidents of the story, the circumstances by which these personages were to be affected, I knew nothing. They were created for the most part as they were described. I never could arrange a set of events before me. But the evil and the good of my puppets, and how the evil would always lead to evil, and the good produce good,--that was clear to me as the stars on a summer night.