question of the cattle finding their own grazing ground but of their building their own cattle-sheds, not a question of one swallow making a summer but of his making a summer house. For the very fact that birds do build nests is one of those similarities that sharpen the startling difference. The very fact that a bird can get as far as building a nest, and cannot get any farther, proves that he has not a mind as man has a mind; it proves it more completely than if he built nothing at all. If he built nothing at all, he might possibly be a philosopher of the Quietist or Buddhistic school, indifferent to all but the mind within. But when he builds as he does build and is satisfied and sings aloud with satisfaction, then we know there is really an invisible veil like a pane of glass between him and us, like the window on which a bird will beat in vain. But suppose our abstract onlooker saw one of the birds begin to build as men build. Suppose in an incredibly short space of time there were seven styles of architecture for one style of nest. Suppose the bird carefully selected forked twigs and pointed leaves to express the piercing piety of Gothic, but turned to broad foliage and black mud when he sought in a darker mood to call up the heavy columns of Bel and Ashtaroth; making his nest indeed one of the hanging gardens of Babylon. Suppose the bird made little clay statues of birds celebrated in letters or politics and stuck them up in front of the nest. Suppose that one bird out of a thousand birds began to do one of the thousand things that man had already done even in the morning of the world; and we can be quite certain that the onlooker would not regard such a bird as a mere evolutionary variety of the other birds; he would regard it as a very fearful wild-fowl indeed; possibly as a bird of ill-omen, certainly as an omen. That bird would tell the augurs, not of something that would happen, but of some thing that had happened. That something would be the appearance of a mind with a new dimension of depth; a mind like that of man. If there be no God, no other mind could conceivably have foreseen it.
Now, as a matter of fact, there is not a shadow of evidence that this thing was evolved at all. There is not a particle of proof that this transition came slowly, or even that it came naturally. In a strictly scientific sense, we simply know nothing whatever about how it grew, or whether it grew, or what it is. There may be a broken trail of stone and bone faintly suggesting the development of the human body. There is nothing even faintly suggesting such a development of this human mind. It was not and it was; we know not in what instant or in what infinity of years. Something happened; and it has all the appearance of a transaction outside of time. It has therefore nothing to do with history in the ordinary sense. The historian must take it or something like it for granted; it is not his business as a historian to explain it. But if he cannot explain it as a historian, he will not explain it as a biologist. In neither case is there any disgrace to him in accepting it without explaining it; for it is a reality, and history and biology deal with realities. He is quite justified in calmly confronting the pig with wings and the cow that jumped over the moon, merely because they have happened. He can reasonably accept man as a freak, because he accepts man as a fact. He can be perfectly comfortable in a crazy and disconnected world, or in a world that can produce such a crazy and disconnected thing. For reality is a thing in which we can all repose, even if it hardly seems related to anything else. The thing is there; and that is enough for most of us. But if we do indeed want to know how it can conceivably have come there, if we do indeed wish to see it related realistically to other things, if we do insist on seeing it evolved before our very eyes from an environment nearer to its own nature, then assuredly it is to very different things that we must go. We must stir very strange memories and return to very simple dreams, if we desire some origin that can make man other than a monster. We shall have discovered very different causes before he becomes a creature of causation; and invoked other authority to turn him into something reasonable, or even into anything probable. That way lies all that is at once awful and familiar and forgotten, with dreadful faces thronged and fiery arms. We can accept man as a fact, if we are content with an unexplained fact. We can accept him as an animal, if we can live with a fabulous animal. But if we must needs have sequence and necessity, then indeed we must provide a prelude and crescendo of mounting miracles, that ushered in with unthinkable thunders in all the seven heavens of another order, a man may be an ordinary thing.
Professors and Prehistoric Men
Science is weak about these prehistoric things in a way that has hardly been noticed. The science whose modern marvels we all admire succeeds by incessantly adding to its data. In all practical inventions, in most natural discoveries, it can always increase evidence by experiment. But it cannot experiment in making men; or even in watching to see what the first men make. An inventor can advance step by step in the construction of an aeroplane, even if he is only experimenting with sticks and scraps of metal in his own back-yard. But he cannot watch the Missing Link evolving in his own back-yard. If he has made a mistake in his calculations, the aeroplane will correct it by crashing to the ground. But if he has made a mistake about the arboreal habitat of his ancestor, he cannot see his arboreal ancestor falling off the tree. He cannot keep a cave-man like a cat in the back-yard and watch him to see whether he does really practice cannibalism or carry off his mate on the principles of marriage by capture. He cannot keep a tribe of primitive men like a pack of hounds and notice how far they are influenced by the herd instinct. If he sees a particular bird behave in a particular way, he can get other birds and see if they behave in that way; but if he finds a skull, or the scrap of a skull, in the hollow of a hill, he cannot multiply it into a vision of the valley of dry bones. In dealing with a past that has almost entirely perished, he can only go by evidence and not by experiment. And there is hardly enough evidence to be even evidential. Thus while most science moves in a sort of curve, being constantly corrected by new evidence, this science flies off into space in a straight line uncorrected by anything. But the habit of forming conclusions, as they can really be formed in more fruitful fields, is so fixed in the scientific mind that it cannot resist talking like this. It talks about the idea suggested by one scrap of bone as if it were something like the aeroplane which is constructed at last out of whole scrapheaps of scraps of metal. The trouble with the professor of the prehistoric is that he cannot scrap his scrap. The marvellous and triumphant aeroplane is made out of a hundred mistakes. The student of origins can only make one mistake and stick to it.
We talk very truly of the patience of science; but in this department it would be truer to talk of the impatience of science. Owing to the difficulty above described, the theorist is in far too much of a hurry. We have a series of hypotheses so hasty that they may well be called fancies, and cannot in any case be further corrected by facts. The most empirical anthropologist is here as limited as an antiquary. He can only cling to a fragment of the past and has no way of increasing it for the future He can only clutch his fragment of fact, almost as the primitive man clutched his fragment of flint. And indeed he does deal with it in much the same way and for much the same reason. It is his tool and his only tool. It is his weapon and his only weapon. He often wields it with a fanaticism far in excess of anything shown by men of science when they can collect more facts from experience and even add new facts by experiment. Sometimes the professor with his bone becomes almost as dangerous as a dog with his bone. And the dog at least does not deduce a theory from it, proving that mankind is going to the dogs--or that it came from them.
For instance, I have pointed out the difficulty of keeping a monkey and watching it evolve into a man. Experimental evidence of such an evolution being impossible, the professor is not content to say (as most of us would be ready to say) that such an evolution is likely enough anyhow. He produces his little bone, or little collection of bones, and deduces the most marvellous things from it. He found in Java a piece of a skull, seeming by its contour to be smaller than the human. Somewhere near it he found an upright thigh-bone and in the same scattered fashion some teeth that were not human. If they all form part of one creature, which is doubtful, our conception of the creature would be almost equally doubtful. But the effect on popular science was to produce a complete and even complex figure, finished down to the last details of hair and habits. He was given a name as if he were an ordinary historical character. People talked of Pithecanthropus as of Pitt or Fox or Napoleon. Popular histories published portraits of him like the portraits of Charles the First and George the Fourth. A detailed drawing was reproduced, carefully shaded, to show that the very hairs of his head were all numbered No uninformed person looking at its carefully lined face and wistful eyes would imagine for a moment that this was the portrait of a thigh-bone; or of a few teeth and a fragment of a cranium. In the same way people talked