I know one particular case of it in a friend of mine.

No matter what he does, one always forgives him.

It does not depend upon looks, either--although this actual person is abominably good-looking--it does not depend upon intelligence or character or--anything--as you say, it is just 'it.' Now you have it, and the Princess, perfectly charming though she is, has not." Sabine did not contradict him; she never was conventional, denying truths for the sake of diffidence or politeness.

Moravia was beautiful and charming, but it was true she had not 'it.' "I think it applies more to men than to women," was all she said.
"You were thinking of a man, then, when you spoke ?" "Yes--I was thinking of a man--but it is not an interesting subject." Lord Fordyce decided that it was, but he did not continue it.
"I want you to tell me all about Heronac," he requested, "and what charmed you in it enough to make you buy it suddenly like that.

How did you come upon it ?" "I had just arrived from America, at the end of July of 1908--four years ago--and I found, when I got to Cherbourg, that I could not join my friend, the Princess, as I had intended, because her husband had taken her off to his country place near Naples.