zeezrom,
As I've been reading further in the novel I thought of another comparison between Corianton - not with our villian but with our hero Angel.
In chapter XXV Hardy gives us a window into Angel's character by contrasting it with his older brothers. How fitting that Angel should have two just as Corianton does, and that the two elder brothers have followed the letter of their father's view of the world in similar ways as Helaman and Shiblon might have done.
First, comparing Mr. Clare the father to Alma the Younger, Hardy tells us this about the pastor:
Old Mr Clare was a clergyman of a type which, within the last twenty years, has wellnigh dropped out of contemporary life. A spiritual descendant in the direct line from Wycliff, Huss, Luther, Calvin; an Evangelical of the Evangelicals, a Conversionist, a man of Apostolic simplicity in life and thought, he had in his raw youth made up his mind once for all in the deeper questions of existence, and admitted no further reasoning on them thenceforward. He was regarded even by those his own date and school of thinking as extreme; while, on the other hand, those totally opposed to him were unwillingly won to admiration for his thoroughness, and for the remarkable power he showed in dismissing all question as to principles in his energy for applying them. He loved Paul of Tarsus, liked St John, hated St James as much as he dared, and regarded with mixed feelings Timothy, Titus, and Philemon. The New Testament was less a Christiad then a Pauliad to his intelligence--less an argument than an intoxication. His creed of determinism was such that it almost amounted to a vice, and quite amounted, on its negative side, to a renunciative philosophy which had cousinship with that of Schopenhauer and Leopardi. He despised the Canons and Rubric, swore by the Articles, and deemed himself consistent through the whole category--which in a way he might have been. One thing he certainly was--sincere.
Is it difficult to see an Alma the Younger being of such a mind-set? After all, he set aside his secular position early in the book of Alma to focus on preaching the word of God.
Hardy tells us this regarding the brothers:
...his two brothers, non-evangelical, well-educated, hall-marked young men, correct to their remotest fibre, such unimpeachable models as are turned out yearly by the lathe of a systematic tuition. They were both somewhat short-sighted, and when it was the custom to wear a single eyeglass and string they wore a single eyeglass and string; when it was the custom to wear a double glass they wore a double glass; when it was the custom to wear spectacles they wore spectacles straightway, all without reference to the particular variety of defect in their own vision. When Wordsworth was enthroned they carried pocket copies; and when Shelley was belittled they allowed him to grow dusty on their shelves. When Correggio's Holy Families were admired, they admired Correggio's Holy Families; when he was decried in favour of Velasquez, they sedulously followed suit without any personal objection.
Alma describes both of his older sons as steadfast, keeping the commandments, and in whom he hopes to have great joy ( a kind of insult for a parent to tell a child, in my opinion. HOPE to have great joy? What about having joy right now?).
Angel's view of them could easily apply to a Helaman or Shiblom:
Felix seemed to him all Church; Cuthbert all College. His Diocesan Synod and Visitations were the mainsprings of the world to the one; Cambridge to the other. Each brother candidly recognized that there were a few unimportant score of millions of outsiders in civilized society, persons who were neither University men nor churchmen; but they were to be tolerated rather than reckoned with and respected.
They were both dutiful and attentive sons, and were regular in their visits to their parents. Felix, though an offshoot from a far more recent point in the devolution of theology than his father, was less self-sacrificing and disinterested. More tolerant than his father of a contradictory opinion, in its aspect as a danger to its holder, he was less ready than his father to pardon it as a slight to his own teaching. Cuthbert was, upon the whole, the more liberal-minded, though, with greater subtlety, he had not so much heart.
What I found interesting is that this and the next chapter tell us something interesting about Angel that might shed light on the question you raise about an Isabel/Corianton relationship. To Hardy, Angel seems the furthest from his father in practise and orthodoxy, but Angel sees in his father's practise (how he lives his beliefs) a hero - someone who puts other firsts and, rightly or wrongly, lives what he believes to a fault.
I think it's fitting that at the end of chapter XXVI Hardy describes Angel as closest to his father in spirit:
Indeed, despite his own heterodoxy, Angel often felt that he was nearer to his father on the human side than was either of his brethren.
Why is that? I think it's because Angel is open to the questions of life and finding his own answers while his brothers simple accepted their father's answers without question: and thus were stunted in their own spiritual growth. They are turned by the lathe of society as Hardy said, a product of a manufactured, industrial process. Angel, on the other hand, is a true human being. Living, breathing, seeking and learning.
This particular phrase stuck with me when I read it and I've been mulling over, and I'd be curious to hear your thoughts on it:
If these two (meaning his brothers) noticed Angel's growing social ineptness, he noticed their growing mental limitations.
It is immediately following this that Hardy describes the one being "all college" and the other "all church". Of Angel, Hardy wants us to understand he is becoming a product of life lived outside of manufactured process - life lived by universal rules self-discovered not social convention:
Latterly he had seen only Life, felt only the great passionate pulse of existence, unwarped, uncontorted, untrammelled by those creeds which futilely attempt to check what wisdom would be content to regulate.
So, what makes Angel interesting as a Corianton to an Isabel? I think it's Angel's basis for ethical behavior towards her, described very early on in XXV:
Despite his heterodoxy, faults, and weaknesses, Clare was a man with a conscience. Tess was no insignificant creature to toy with and dismiss; but a woman living her precious life--a life which, to herself who endured or enjoyed it, possessed as great a dimension as the life of the mightiest to himself. Upon her sensations the whole world depended to Tess; through her existence all her fellow-creatures existed, to her. The universe itself only came into being for Tess on the particular day in the particular year in which she was born.
This consciousness upon which he had intruded was the single opportunity of existence ever vouchsafed to Tess by an unsympathetic First Cause--her all; her every and only chance. How then should he look upon her as of less consequence than himself; as a pretty trifle to caress and grow weary of; and not deal in the greatest seriousness with the affection which he knew that he had awakened in her--so fervid and so impressionable as she was under her reserve; in order that it might not agonize and wreck her?
As universal rules to live by go in regards to learning how to treat others, I'd say a person could do much, much worse.