... rose and went out of the room on tiptoe, like a ballet dancer, but smiling as only happy girls of fifteen can smile. When Rostov met Sonya in the drawing room, he reddened. He did not know how to behave with her. The evening before, in the first happy moment of meeting, they had kissed each other, but today they felt it could not be done; he felt that everybody, ... — War and Peace • Leo Tolstoy