I suppose it is odd to put these two writers together, and I do so for only one reason--so I'll start with that and move on to tpleasures one derives from Henry James alone.
While there are a great many things delightful about reading both Georgette Heyer and Henry James, one thing the two have in common is a sensibility that seems to have long since fled the world. They come from a world and a time that was not completely genitally obsessed. In Henry James, marriage, infidelity, and the like make up the fabric of the story, but we are not invited into the intimacy of the physical marital union--it is not germane to his point--as it is not germane to most of what we read. It is an add-on that has long since lost its shock-value, novelty, and, frankly, its interest. It's one thing to read Lawrence Durrell trying to turn the literary world upside down (a little late considering he came in the wake of Henry Miller), and quite another to read the tawdriness of most modern novels wherein sex is interjected because there seems to be nothing else to keep the reader's interest for pages on end.
As with Henry James, so too with Georgette Heyer. In most cases her virginal heroines are married or about to be married on the last page. There is always some kiss or another misinterpreted, unasked for, or otherwise "transgressive," but nothing that would offend the sensibilities of my grandmother. And that's exactly as I like it. I have read, at the recommendation of another, some modern romances and have, in some cases, been delighted with the writing, but nearly always disappointed by the perceived necessity to make the stories "hot."
While Henry James and Georgette Heyer both share in this delight, there is another pleasure in James's writing that cannot be said to be a characteristic of Ms. Heyer's. Henry James forces us to slow down. It is nearly impossible to get anything out of reading Henry James rapidly, except perhaps a sense of vertigo and a headache that threatens to split your skull. Henry James, particularly in the later period, specializes in periodic sentences that require slowing down and reading with great care. To wit:
"She hadn't pretended this, as she had pretended on the other hand, to have divined Waymarsh's wish to extend to her an independent protection homeward; but Strether nevertheless found how, after he had Chad opposite to him at a small table in the brilliant halls that his companion straightaway selected, sharply and easily discriminated from others, it was quite, to his mind, as if she heard him speak; as if, sitting up, a mile away, in the little apartment he knew, she would listen hard enough to catch."
Now THAT is a sentence. And The Ambassadors as well as The Golden Bowl is a book of such sentences and more. (I cannot yet speak to The Wings of the Dove, but hope to do so soon.) It was one of my great plesures when the reading group I belong to expressed delight and great pleasure with reading The Portrait of a Lady. There is a sense of accomplishment in just getting through the books; however, there is a lingering element--a kind of spirit of the book that stays long after the last page has been finished and the last word said that provides a sustained pleasure--that gives one a true sense of why Henry James is rightfully called "The Master." There is none other like him, not remotely, and I have to say that it came as a woeful surprise to me that I was unable to pick up much of anything in the way of modern literature after having taken in the real and solid pleasures of The Portrait of a Lady. The modern sensibility palls in comparison. Henry James turns pleasure, leisure reading into an edifying and strengthening activity that delights both heart and mind in the recollection of it. There is no modern writer of whom I would say the same.