Human civilisation is older than human records. That is the sane way of stating our relations to these remote things. Humanity has left examples of its other arts earlier than the art of writing; or at least of any writing that we can read. But it is certain that the primitive arts were arts; and it is in every way probable that the primitive civilisations were civilisations. The man left a picture of the reindeer, but he did not leave a narrative of how he hunted the reindeer; and therefore what we say of him is hypothesis and not history. But the art he did practise was quite artistic; his drawing was quite intelligent, and there is no reason to doubt that his story of the hunt would be quite intelligent, only if it exists it is not intelligible. In short, the prehistoric period need not mean the primitive period, in the sense of the barbaric or bestial period. It does not mean the time before civilisation or the time before arts and crafts. It simply means the time before any connected narratives that we can read. This does indeed make all the practical difference between remembrance and forgetfulness; but it is perfectly possible that there were all sorts of forgotten forms of civilisation, as well as all sorts of forgotten forms of barbarism. And in any case everything indicated that many of these forgotten or half-forgotten social stages were much more civilised and much less barbaric than is vulgarly imagined to-day. But even about these unwritten histories of humanity, when humanity was quite certainly human, we can only conjecture with the greatest doubt and caution. And unfortunately doubt and caution are the last things commonly encouraged by the loose evolutionism of current culture. For that culture is full of curiosity; and the one thing that it cannot endure is the agony of agnosticism. It was in the Darwinian age that the word first became known and the thing first became impossible.