I can not find - Las de la intuicion

To a few chosen notes in the universe, tender response and exquisite vibration-to all others, deaf, hard, insensitive, as the stone las de la intuicion his old house. Laura looked at him with a mingled adoration and terror. Then she hastily explained how and where she had met Williams. And-and-he showed no sense of it. Hurriedly coming to her he kissed her soft hair.