On the other hand, it is equally true that the needs of modern industry have been tremendous stimuli to scientific investigation. The demands of progressive production and transportation have set new problems to inquiry; the processes used in industry have suggested new experimental appliances and operations in science; the wealth rolled up in business has to some extent been diverted to endowment of research. The uninterrupted and pervasive interaction of scientific discovery and industrial application has fructified both science and industry, and has brought home to the contemporary mind the fact that the gist of scientific knowledge is control of natural energies. These four facts, natural science, experimentation, control and progress have been inextricably bound up together. That up to the present the application of the newer methods and results has influenced the means of life rather than its ends; or, better put, that human aims have so far been affected in an accidental rather than in an intelligently directed way, signifies that so far the change has been technical rather than human and moral, that it has been economic rather than adequately social. Put in the language of Bacon, this means that while we have been reasonably successful in obtaining command of nature by means of science, our science is not yet such that this command is systematically and pre-eminently applied to the relief of human estate. Such applications occur and in great numbers, but they are incidental, sporadic and external. And this limitation defines the specific problem of philosophical reconstruction at the present time. For it emphasizes the larger social deficiencies that require intelligent diagnosis, and projection of aims and methods. It is hardly necessary to remind you however that marked political changes have already followed upon the new science and its industrial applications, and that in so far some directions of social development have at least been marked out. The growth of the new technique of industry has everywhere been followed by the fall of feudal institutions, in which the social pattern was formed in agricultural occupations and military pursuits. Wherever business in the modern sense has gone, the tendency has been to transfer power from land to financial capital, from the country to the city, from the farm to factory, from social titles based on personal allegiance, service and protection, to those based on control of labor and exchange of goods. The change in the political centre of gravity has resulted in emancipating the individual from bonds of class and custom and in producing a political organization which depends less upon superior authority and more upon voluntary choice. Modern states, in other words, are regarded less as divine, and more as human works than they used to be; less as necessary manifestations of some supreme and over-ruling principles, and more as contrivances of men and women to realize their own desires.