From that moment, in the hope that Swann would catch sight of her, the Princess could do nothing but (like a tame white mouse when a lump of sugar is put down before its nose and then taken away) turn her face, in which were crowded a thousand signs of intimate connivance, none of them with the least relevance to the sentiment underlying Chopin's music, in the direction where Swann was, and, if he moved, divert accordingly the course of her magnetic smile.