I feel altogether confident that the historian of the future will estimate the past thirty years as the most extraordinary in the history of the world up to the present… there has been no period at all comparable with it unless it be the period about 300 years ago, which saw the development of Galilean and Newtonian mechanics. This was indeed of incalculable importance for the destinies of the race; the conceptions then introduced are not only the basis of modern material civilization, but they were the cause of a very complete change in man’s whole intellectual and spiritual outlook- in his philosophy, his religion, and his morals.