[227] new ideal was substituted for the old ideal based on theological propositions. It inspired the English Utilitarian philosophers (Bentham, James Mill, J. S. Mill, Grote) who preached the greatest happiness of the greatest number as the supreme object of action and the basis of morality. This ideal was powerfully reinforced by the doctrine of historical progress, which was started in France (1750) by Turgot, who made progress the organic principle of history. It was developed by Condorcet (1793), and put forward by Priestley in England. The idea was seized upon by the French socialistic philosophers, Saint-Simon and Fourier. The optimism of Fourier went so far as to anticipate the time when the sea would be turned by man’s ingenuity into lemonade, when there would be 37 million poets as great as Homer, 37 million writers as great as Molière, 37 million men of science equal to Newton. But it was Comte who gave the doctrine weight and power. His social philosophy and his religion of Humanity are based upon it. The triumphs of science endorsed it; it has been associated with, though it is not necessarily implied in, the scientific theory of evolution; and it is perhaps fair to say that it has been the guiding spiritual force of the nineteenth century. It has introduced [228] the new ethical principle of duty to posterity. We shall hardly be far wrong if we say that the new interest in the future and the progress of the race has done a great deal to undermine unconsciously the old interest in a life beyond the grave; and it has dissolved the blighting doctrine of the radical corruption of man. Nowhere has the theory of progress been more emphatically recognized than in the Monistic movement which has been exciting great interest in Germany (1910–12). This movement is based on the ideas of Haeckel, who is looked up to as the master; but those ideas have been considerably changed under the influence of Ostwald, the new leader. While Haeckel is a biologist, Ostwald’s brilliant work was done in chemistry and physics. The new Monism differs from the old, in the first place, in being much less dogmatic. It declares that all that is in our experience can be the object of a corresponding science. It is much more a method than a system, for its sole ultimate object is to comprehend all human experience in unified knowledge. Secondly, while it maintains, with Haeckel, evolution as the guiding principle in the history of living things, it rejects his pantheism and his theory of thinking atoms. The old mechanical theory of the