Again therefore it is quite natural that we should hear a demand for a more extensive use of these powers of ours. The ships and ploughs and illuminants of a hundred years ago were made by the same men, or the same generations of men, as the religions and polities and moralities of the time. Why assume that the wisdom of the race was almost infallible in its spiritual and more difficult creations, but capable of enormous improvement on the material side? Conservatism, as anything more than an attitude of caution and prudence, has not a plausible air. It is well also to regard the essential or characteristic line of human evolution. Apart from a few who are caught by a transient attempt to glorify instinct, we agree that the development of intelligence is one of the main sources of progress. Now this great and general awakening of intelligence in recent decades was bound to lead to a good deal of challenging of old traditions. That was precisely why the grandfathers of our bishops and peers opposed it. This higher intelligence of the race is now assisted in its decisions by a vastly greater and more accurate knowledge of man and the universe than our grandparents had; and the cheapening of literature dimly conveys this knowledge to millions who were left out of account when the traditional maps of life were drafted. The artisan discusses economics and theology. The Tonga Islander works out mathematical problems. I met a pure-blooded negro, with a European degree in philosophy, who told me that he had been forced to resign his chair in an African Mohammedan college because of his advanced ideas! Once I discussed with a group of miners industrial questions and religion from twelve to three in the morning, over pots of beer, in a little inn on the west coast of New Zealand, a hundred miles from anything like a town. It is quite impossible for this spreading and better informed intelligence to bow humbly to the ideas of an earlier generation. It is going to think for itself, at all events. The old traditions must be revised throughout. Revision is not particularly dangerous except to errors. And already we have discovered that our political and religious and social oracles have been teaching a good deal of error. We begin to suspect that many things the divine right of kings and the eternal torment of the wicked may not be strictly accurate. We had better reconsider all our ways of living.