"All the material inventions which we see around us have been produced by the creative powers and capabilities of individuals. And all these inventions help man to raise himself higher and higher above the animal world and to separate himself from that world in an absolutely definite way. Hence they serve to elevate the human species and continually to promote its progress. And what the most primitive artifice once did for man in his struggle for existence, as he went hunting through the primeval forest, that same sort of assistance is rendered him today in the form of marvellous scientific inventions which help him in the present day struggle for life and to forge weapons for future struggles."