Black Oxen by Gertrude Atherton

Clavering slept when he first went to bed, for he was healthily tired, but he awoke suddenly at midnight with body refreshed and mind abnormally clear. He knew that he would sleep no more that night, and he put on his trousers and coat over his pyjamas, thrust his feet into bedroom slippers and went out into the living-room. There he put a log on the fire and paced up and down, not unlike a tiger round its cage.

He felt as if black bats were flying about his brain, each charged with a different portent of disaster. Once more the unreality of the whole affair overwhelmed him. How could he have been so fatuous as to believe that he had really won such a woman? He remembered his first impression: that she was on a plane above, apart. They hadn't an interest in common, not even a memory that antedated their meeting a few short weeks ago. She had lived a life of which he knew nothing outside of European novels and memoirs. She had known nothing of any other world until he had introduced her to his friends, and he made no doubt that her interest in them was about as permanent as a highly original comedy on the stage would inspire. There was nothing, literally, between them but a mutual irresistible attraction, and that bond recognized so unerringly by both.