Species developed from a common genus will show some common traits and some rules of mutual observance, savage peoples which have divided into tribes being an exception to the latter part of the statement, for the reason that lower societies have very little moral cohesion; they may be compared to lower organisms which reproduce themselves by fission, or to homogeneous colonies of animals, like sponges. Under the generic institutions we must not include those which arise merely as the result of similar circumstances. Ideals once formed advance at very different rates, though the tendency to divergence is always being corrected by the diffusion of ideas. But where one nation takes ideas from another, these ideas are not borrowed, in the sense that they come wholly from the other nation; there must have been, in the borrowing nation, a development of ideas up to the point that makes the borrowing possible,--a similar development to that of the nation from which the borrowing takes place, due to similar circumstances. The communication of moral ideas does not depend upon race-community, as is shown by the ready adoption of Western ideas by such nations as the Hindoos and Japanese. In general language, we identify development and progress; and this is true also in the case of morality. Goodness means progress; wickedness, retrogression or else stagnation, which, compared with advance, is retrogression. "In changing from one form to another, morality changes from what is right under one set of conditions to what is right under another set, and such change from good to good is what we mean by becoming better. To deny this is to find some other standard of advance than in the actual movement which has taken place, to put an _a priori_ conception of development in place of the facts." "The moral ideal is always, therefore, a progress, for either the society is single, and goodness represents the law of its advance, or if the society is part of a larger one, its ideal can be retrogressive only because the society is so far bad." "And since goodness and badness exhaust the field of moral possibilities, if the propositions that goodness means progress, and badness regress, are both true, we must be able to convert them, and maintain that all progress is due to goodness and all regress to badness." To do this, we must distinguish between degradation and a mere degeneration which involves a return to simpler conditions as an adaptation to changed environment. Such degeneration as adaptation to circumstances, in an individual or a society as a whole, is progress. Fish who become blind by living in the dark become thus better fitted to their circumstances, and the like is true of moral degeneration under simpler conditions. Old age and death are characteristic of the higher type of organism, in distinction from the lower types which, multiplying by fission, are practically eternal; they are conditions of the