I read now and then in the papers that some eminent scientist had made a great discovery. He reads a paper before some Academy of Science, and there are leading articles on it, and his photograph adorns the magazines. That kind of man is not the danger. He is a bit of the machine, a party to the compact. It is the men who stand outside it that are to be reckoned with, the artists in discovery who will never use their knowledge till they can use it with full effect.