The life which I supposed them to lead there flowed from a source so different from anything in my experience, and must, I felt, be so indissolubly associated with that particular house that I could not have imagined the presence, at the Duchess′s parties, of people in whose company I myself had already been, of people who really existed. For not being able suddenly to change their nature, they would have carried on conversations there of the sort that I knew; their partners would perhaps have stooped to reply to them in the same human speech; and, in the course of an evening spent in the leading house in the Faubourg Saint-Germain, there would have been moments identical with moments that I had already lived. Which was impossible.