“Pierre Janet—sometimes the man talked like an Oriental mystic. He had no real grasp of the opposites. ‘The act of injuring and the act of being injured are joined in the behavior of the whole injury.’ Speaker and spoken-of, master and slave, virgin and seducer, each pair most conveniently coupled and inseparable—The last refuge of the incorrigibly lazy, Mexico, is just this sort of yang-yin rubbish. One avoids all manner of unpleasant lab work that way, but what has one said?”

“I don’t want to get into a religious argument with you,” absence of sleep has Mexico more cranky today than usual, “but I wonder if you people aren’t a bit too—well, strong, on the virtues of analysis. I mean, once you’ve taken it all apart, fine, I’ll be first to applaud your industry. But other than a lot of bits and pieces lying about, what have you said?”

It isn’t the sort of argument Pointsman relishes either. But he glances sharply at this young anarchist in his red scarf. “Pavlov believed that the ideal, the end we all struggle toward in science, is the true mechanical explanation. He was realistic enough not to expect it in his lifetime. Or in several lifetimes more. But his hope was for a long chain of better and better approximations. His faith ultimately lay in a pure physiological basis for the life of the psyche. No effect without cause, and a clear train of linkages.”

“It’s not my forte, of course,” Mexico honestly wishing not to offend the man, but really, “but there’s a feeling about that cause-and-effect may have been taken as far as it will go. That for science to carry on at all, it must look for a less narrow, a less… sterile set of assumptions. The next great breakthrough may come when we have the courage to junk cause-and-effect entirely, and strike off at some other angle.”

“No—not ‘strike off.’ Regress. You’re 30 years old, man. There are no ‘other angles.’ There is only forward—into it—or backward.”

Mexico watches the wind tugging at the skirts of Pointsman’s coat. A gull goes screaming away sidewise along the frozen berm. The chalk cliffs rear up above, cold and serene as death. Early barbarians of Europe who ventured close enough to this coast saw these white barriers through the mist, and knew then where their dead had been taken to.

Pointsman has turned now, and… oh, God. He is smiling. There is something so ancient in its assumption of brotherhood that—not now, but a few months from now, with spring prevailing and the War in Europe ended—Roger will remember the smile—it will haunt him—as the most evil look he has ever had from a human face.