III

There is unfortunately one fallacy here into which it is very easy for men to fall, even those who are most intelligent and perhaps especially those who are most imaginative. It is the fallacy of supposing that because an idea is greater in the sense of larger, therefore it is greater in the sense of more fundamental and fixed and certain. If a man lives alone in a straw hut in the middle of Tibet, he may be told that he is living in the Chinese Empire; and the Chinese Empire is certainly a splendid and spacious and impressive thing. Or alternatively he may be told that he is living in the British Empire, and be duly impressed. But the curious thing is that in certain mental states he can feel much more certain about the Chinese Empire that he cannot see than about the straw hut that he can see. He has some strange magical juggle in his mind, by which his argument begins with the empire though his experience begins with the hut. Sometimes he goes mad and appears to be proving that a straw hut cannot exist in the domains of the Dragon Throne; that it is impossible for such a civilisation as he enjoys to contain such a hovel as he inhabits. But his insanity arises from the intellectual slip of supposing that because China is a large and all-embracing hypothesis, therefore it is something more than a hypothesis. Now modern people are perpetually arguing in this way; and they extend it to things much less real and certain than the Chinese Empire. They seem to forget, for instance, that a man is not even certain of the Solar System as he is certain of the South Downs. The Solar System is a deduction, and doubtless a true deduction; but the point is that it is a very vast and far-reaching deduction, and therefore he forgets that it is a deduction at all and treats it as a first principle. He might discover that the whole calculation is a miscalculation; and the sun and stars and street lamps would look exactly the same. But he has forgotten that it is a calculation, and is almost ready to contradict the sun if it does not fit into the Solar System. If this is a fallacy even in the case of facts pretty well ascertained, such as the Solar System and the Chinese