As Rivers, Nat Cassidy is much harsher and religious law-abiding that his character is in the novel
So how harsh is St. John in the book?
Well, first off, an incredibly beautiful, wealthy young woman adores him. Here is what he has to say about that:
"While something in me," he went on, "is acutely sensible to her charms, something else is as deeply impressed with her defects: they are such that she could sympathise in nothing I aspired to—co-operate in nothing I undertook. Rosamond a sufferer, a labourer, a female apostle? Rosamond a missionary’s wife? No!"
"But you need not be a missionary. You might relinquish that scheme."
"Relinquish! What! my vocation? My great work? My foundation laid on earth for a mansion in heaven? My hopes of being numbered in the band who have merged all ambitions in the glorious one of bettering their race—of carrying knowledge into the realms of ignorance—of substituting peace for war—freedom for bondage—religion for superstition—the hope of heaven for the fear of hell? Must I relinquish that? It is dearer than the blood in my veins. It is what I have to look forward to, and to live for."
Oh yeah, not TOO zealoty.
And there's plenty more. Here we see him disgruntled because he thinks Jane is putting too much effort into cleaning for the Christmas holidays:
"To the end of turning to profit the talents which God has committed to your keeping; and of which He will surely one day demand a strict account. Jane, I shall watch you closely and anxiously—I warn you of that. And try to restrain the disproportionate fervour with which you throw yourself into commonplace home pleasures. Don’t cling so tenaciously to ties of the flesh; save your constancy and ardour for an adequate cause; forbear to waste them on trite transient objects. Do you hear, Jane?”
Here's how St. John proposes marriage to Jane:
"Yes," said he, "there is my glory and joy. I am the servant of an infallible Master. I am not going out under human guidance, subject to the defective laws and erring control of my feeble fellow-worms: my king, my lawgiver, my captain, is the All-perfect. It seems strange to me that all round me do not burn to enlist under the same banner,—to join in the same enterprise."
“All have not your powers, and it would be folly for the feeble to wish to march with the strong.”
“I do not speak to the feeble, or think of them: I address only such as are worthy of the work, and competent to accomplish it.”
“Those are few in number, and difficult to discover.”
“You say truly; but when found, it is right to stir them up—to urge and exhort them to the effort—to show them what their gifts are, and why they were given—to speak Heaven’s message in their ear,—to offer them, direct from God, a place in the ranks of His chosen.”
“If they are really qualified for the task, will not their own hearts be the first to inform them of it?”
I felt as if an awful charm was framing round and gathering over me: I trembled to hear some fatal word spoken which would at once declare and rivet the spell.
“And what does your heart say?” demanded St. John.
“My heart is mute,—my heart is mute,” I answered, struck and thrilled.
"Then I must speak for it," continued the deep, relentless voice. "Jane, come with me to India: come as my helpmeet and fellow-labourer."
The glen and sky spun round: the hills heaved! It was as if I had heard a summons from Heaven—as if a visionary messenger, like him of Macedonia, had enounced, “Come over and help us!” But I was no apostle,—I could not behold the herald,—I could not receive his call.
"Oh, St. John!" I cried, "have some mercy!"
I appealed to one who, in the discharge of what he believed his duty, knew neither mercy nor remorse. He continued—
"God and nature intended you for a missionary’s wife. It is not personal, but mental endowments they have given you: you are formed for labour, not for love. A missionary’s wife you must—shall be. You shall be mine: I claim you—not for my pleasure, but for my Sovereign’s service."
In other words, St. John plans to consummate the marriage while thinking of The Lord.
Clearly St. John is a total fanatic.
Which is why I presented him as one in my adaptation of Jane Eyre.
Here we see St. John making Jane pray with him. At this point in the play, through the power of his personal charisma and fanatacism - because remember, Jane herself is devout, if not fanatical - he almost succeeds in getting Jane to marry him and go off to missionarize the heathens in India. This is right before Jane hears the disembodied voice of Rochester calling her name.
My mother saw the show in February. She wanted Jane to marry St. John. She's a devout Catholic, although I suspect her preference was due at least in part to thinking Nat is a hottie.
In an interview for my recent adaptation, Nat explains how St. John misunderstands Jane - he correctly refers to St. John as a "religious zealot."
Watch the video clip