She liked her as much as ever, but there was a corner of the curtain that never was lifted; it was as if she had remained after all something of a public performer, condemned to emerge only in character and in costume. She had once said that she came from a distance, that she belonged to the "old, old" world, and Isabel never lost the impression that she was the product of a different moral or social clime from her own, that she had grown up under other stars.
She believed then that at bottom she had a different morality. Of course the morality of civilised persons has always much in common; but our young woman had a sense in her of values gone wrong or, as they said at the shops, marked down. She considered, with the presumption of youth, that a morality differing from her own must be inferior to it; and this conviction was an aid to detecting an occasional flash of cruelty, an occasional lapse from candour, in the conversation of a person who had raised delicate kindness to an art and whose pride was too high for the narrow ways of deception. Her conception of human motives might, in certain lights, have been acquired at the court of some kingdom in decadence, and there were several in her list of which our heroine had not even heard. She had not heard of everything, that was very plain; and there were evidently things in the world of which it was not advantageous to hear. She had once or twice had a positive scare; since it so affected her to have to exclaim, of her friend, "Heaven forgive her, she doesn't understand me!" Absurd as it may seem this discovery operated as a shock, left her with a vague dismay in which there was even an element of foreboding. The dismay of course subsided, in the light of some sudden proof of Madame Merle's remarkable intelligence; but it stood for a high-water-mark in the ebb and flow of confidence.
Madame Merle had once declared her belief that when a friendship ceases to grow it immediately begins to decline--there being no point of equilibrium between liking more and liking less. A stationary affection, in other words, was impossible--it must move one way or the other. However that might be, the girl had in these days a thousand uses for her sense of the romantic, which was more active than it had ever been. I do not allude to the impulse it received as she gazed at the Pyramids in the course of an excursion from Cairo, or as she stood among the broken columns of the Acropolis and fixed her eyes upon the point designated to her as the Strait of Salamis; deep and memorable as these emotions had remained. She came back by the last of March from Egypt and Greece and made another stay in Rome.