What's Mine's Mine. Volume II by George MacDonald

At the dance in the chief's barn, Sercombe had paired with Annie of the shop oftener than with any other of the girls. That she should please him at all, was something in his favour, for she was a simple, modest girl, with the nicest feeling of the laws of intercourse, the keenest perception both of what is in itself right, and what is becoming in the commonest relation. She understood by a fine moral instinct what respect was due to her, and what respect she ought to show, and was therefore in the truest sense well-bred. There are women whom no change of circumstances would cause to alter even their manners a hair's-breadth: such are God's ladies; there are others in whom any outward change will reveal the vulgarity of a nature more conscious of claim than of obligation.

I need not say that Sercomhe, though a man of what is called education, was but conventionally a gentleman. If in doubt whether a man be a gentleman or not, hear him speak to a woman he regards as his inferior: his very tone will probably betray him. A true gentleman, that is a true man, will be the more carefully respectful. Sercombe was one of those who regard themselves as respectable because they are prudent; whether they are human, and their brother and sister's keeper, they have never asked themselves.