Other distinctive ideas of George Eliot's appear throughout this book. Her theories of heredity, altruism and environment affect the whole development of the story. Perhaps no more striking illustration of the law of retribution is to be found in her books than in the case of Mrs. Transome. This woman's sin corrupted her own life, and helped to darken the lives of others.

The aim had in view in Middlemarch is to illustrate the impotence of modern life so far as it relates in moral heroism and spiritual attainment. High and noble action is hindered and baulked by the social conditions in the midst of which we live; and those who would live grandly and purely, and in a supreme unselfishness devote themselves to the world, find that their efforts are in vain. Dorothea has longings after a life of love and service; she would live for high purposes and give herself for others' good. Her hopes end in disaster almost; and she is cramped and baulked on every side. Lydgate would devote himself to science, to patient investigations for the sake of alleviating human misery and disease. His social environment cripples him, and his life comes to nothing compared with what he had aimed at, and what he was capable of attaining. Dorothea is presented as capable of becoming a saint, being of an ardent, heroic nature, a woman who yearned after some lofty conception of the world that was to be made, not merely poetry, but an actual fact about her; who was "enamoured of intensity and greatness," and "likely to seek martyrdom." The difficulties which most beset such a nature are presented in the very first chapter, where these saintly tendencies are considered as probable obstacles to her making a good marriage.

A young lady of some birth and fortune, who knelt suddenly down on a brick floor by the side of a sick laborer and prayed fervidly, as if she thought herself living in the time of the Apostles—who had strange whims of fasting like a Papist, and of sitting up at night to read old theological books! Such a wife might awaken you some fine morning with a new scheme for the application of her income which would interfere with political economy, and the keeping of saddle-horses; a man would naturally think twice before he risked himself in such fellowship.

The social life of Tipton really had no room for such a woman, could not employ her rare gifts, knew not what to make of her yearnings and her charity. And Tipton is the world and modern life, which spurns the heroic, has no place for the poetry of existence, can make nothing of yearnings and longings for high heroism. Because the social order into which she was born could not use her gifts, because the vision of life in her soul was other and higher than that which society had marked out for such as she, her life was wasted in an unhappy marriage. In an earlier age she would have become a St. Theresa, for society then had a place for such souls. Now she bows in reverence to a man of learning, dreams great things of tender service to him; but this proves not to be the place in which she belongs. In the last paragraphs of the book the author gives her own account of Dorothea's failure to reach the good she sought.

Sir James never ceased to regard Dorothea's second marriage as a mistake; and indeed this remained the tradition concerning it in Middlemarch, where she was spoken of to a younger generation as a fine girl who married a sickly clergyman, old enough to be her father, and in little more than a year after his death gave up her estate to marry his cousin—young enough to have been his son, with no property, and not well-born. Those who had not seen anything of Dorothea usually observed that she could not have been "a nice woman," else she would not have married either the one or the other.

Certainly those determining acts of her life were not ideally beautiful. They were the mixed result of young and noble impulse struggling under prosaic conditions. Among the many remarks passed on her mistakes, it was never said in the neighborhood of Middlemarch that such mistakes could not have happened if the society into which she was born had not smiled on propositions of marriage from a sickly man to a girl less than half his own age—on modes of education which make a woman's knowledge another name for motley ignorance—on rules of conduct which are in flat contradiction with its own loudly asserted beliefs. While this is the social air in which mortals begin to breathe, there will be collisions such as those in Dorothea's life, where great feelings take the aspect of error, and great faith the aspect of illusion. For there is no creature whose inward being is so strong that it is not greatly determined by what lies outside it. A new Theresa will hardly have the opportunity of reforming a conventual life, any more than a new Antigone will spend her heroic piety in daring all for the sake of a brother's burial; the medium in which their ardent deeds took place is forever gone. But we insignificant people with our daily words and acts, are preparing the lives of many Dorotheas, some of which may present a far sadder sacrifice than that of the Dorothea whose story we know.

Her finely touched spirit had still its fine issues, though they were not widely visible. Her full nature, like that river of which Alexander broke the strength, spent itself in channels which had no great name on the earth. But the effect of her being on those around her was incalculably diffusive; for the growing good of the world is partly dependent on unhistoric acts; and that things are not so ill with you and me as they might have been is half owing to the number who lived faithfully a hidden life, and rest in unvisited tombs.

The influence of social environment is also presented in Felix Holt as a chief determining agent in the lives of individuals. However high the aims and noble the purposes of the individual, he must succumb to those social influences which are more powerful than he. In the third chapter we are told that—

This history is chiefly concerned with the private lot of a few men and women; but there is no private life which has not been determined by a wider public life, from the time when the primeval milkmaid had to wander with the wanderings of her clan, because the cow she milked was one of a herd which had made the pastures bare. Even in that conservatory existence where the fair Camelia is sighed for by the noble young Pineapple, neither of them needing to care about the frost or rain outside, there is a nether apparatus of hot-water pipes liable to cool down on a strike of the gardeners or a scarcity of coal. And the lives we are about to look back upon do not belong to those conservatory species; they are rooted in the common earth, having to endure all the ordinary chances of past and present weather. As to the weather of 1832, the Zadkiel of that time had predicted that the electrical condition of the clouds in the political hemisphere would produce unusual perturbations in organic existence, and he would perhaps have seen a fulfilment of his remarkable prophecy in that mutual influence of dissimilar destinies which we shall see gradually unfolding itself. For if the mixed political conditions of Treby Magna had not been acted on by the passing of the Reform Bill, Mr. Harold Transome would not have presented himself as a candidate for North Loamshire, Treby would not have been a polling-place, Mr. Matthew Jermyn would not have been on affable terms with a Dissenting preacher and his flock, and the venerable town would not have been placarded with handbills, more or less complimentary and retrospective—conditions in this case essential to the "where" and the "what," without which, as the learned know, there can be no event whatever.

In the case of Lydgate, if the ambition was less noble and pure, the fall was greater, and the disaster sadder to contemplate. He, too, was hindered by his "environment," but it was much more of his own creating, the result of his own nature, than in the case of Dorothea. We are told that "he was fired with the possibility that he might work out the proof of an anatomical conception, and make a link in the chain of discovery." That he was fully capable of achieving such a result is made to appear by the author. The account given of the discovery he wished to make, abundantly confirms this opinion of him; it also shows how large was George Eliot's learning, and how well she could use it for the novelist's purposes.