'Before doing that, I should like to say that we scientific workers do very much depend on having a number of us together. One scientific worker placed in charge of any great work finds it difficult; scientific workers do not get the chance of appointing men in sympathy with themselves often enough; so it is frequently said that scientific men placed in command of a factory in industry or a department of state at home or in the colonies fail. Well, if so, they fail because scientific men have not often got the opportunity of getting men of like sympathy to work with them. I take it that the object of the National Union of Scientific Workers is to get scientific men with scientific views of life and experimental experience to join together in some great work. When I speak of the duty and service of science in the new era, I mean that I want scientific men to claim justly a larger share in the work of the world, and not to confine themselves to what is called purely scientific work. We want them to expand themselves over a wider area. As a matter of fact, that is what two distinguished writers have suggested: that the time has come when the ordinary discoveries and inventions of science should be closed down in order to enable scientific minds to do this simple thing. Practically everything that exists now is the work of scientific men, their discoveries and their inventions. The whole world teems with the results of the work of science. The great machines we see used in industry--the industrial machine itself--have been created by men of science. Now, I put it to you that when motor cars came in, the nobility of the land found their coachmen of little use. The scientific machine requires scientific men to manage it. Our industrial life is imperfectly organised; all our troubles are due to the fact that we have a process created by science, but organised in the old way by men of a different outlook. The discoveries of science have rushed into the world a considerable amount of unexpected ability. Working men engaged in industrial pursuits have had their intelligence discovered and brought out, and it is one thing to control a mass of human beings who are not thus inspired with the knowledge of their own possibilities, and another to control those who are. It is like trying to control a set of live molecules. It is one thing to control a hard atom and another to control a live electron. 'So that the duty and service of science would seem to lie in scientific men bringing their ideal of life, their standards, their vision, their outlook, and their methods to organise the great machine that their inventions have created. You cannot have a world half scientific and the other half nothing of the sort.