In every pure romance there are three living and moving characters. For the sake of argument they may be called St. George and the Dragon and the Princess. In every romance there must be the twin elements of loving and fighting. In every romance there must be the three characters: there must be the Princess, who is a thing to be loved; there must be the Dragon, who is a thing to be fought; and there must be St. George, who is a thing that both loves and fights. There have been many symptoms of cynicism and decay in our modern civilisation. But of all the signs of modern feebleness, of lack of grasp on morals as they actually must be, there has been none quite so silly of so dangerous as this: that the philosophers of to-day have started to divide loving from fighting and to put them into opposite camps. There could be no worse sign than that a man, even Nietzsche, can be found to say that we should go in for fighting instead of loving. There can be no worse sign than that a man, even Tolstoi, can be found to tell us that we should go in for loving instead of fighting. The two things imply each other; they implied each other in the old romance and in the old religion, which were the two permanent things of humanity. You cannot love a thing without wanting to fight for it. You cannot fight without something to fight for.
– Preface to Nicholas Nickleby.