Neither dared let the other approach, yet each repeatedly felt the impulse to do so himself, and yielded to it. It was foolish, frightening, ecstatic and unbearable all in one moment. It was more than curiosity. It was like a courtship - like the meeting of the first man and the first woman in the world; it was like something beyond that; so natural is the contact of the sexes, so limited the strangeness, so shallow the reticence, so mild the repugnance to be overcome, compared with the first tingling intercourse of two different, but rational, species.