The development of the whole nature implies a development of both the emotional and the intellectual nature; new sensibilities imply new sentiments; and increased range of thought is associated with an equal growth in complexity and variety of emotion. The more reasonable being acts with emotion, but his emotions have more complex and refined methods. The reasonable man is a better mirror of the world without him, his conduct shows a better adaptation to ends and a greater logical consistency in its parts; more harmony of action between the different instincts. The important question is not solved by these facts. We may still ask: How is the relation between the different instincts, the influence exerted by each member of the federation, determined? We start with certain fixed relations between our various instincts; and however these may change afterwards, our character is so far determined from the start. Again, it is plain that this inherited balance varies greatly with different peoples and gives rise to different types. In one man the sensual passions have a greater relative importance than in his neighbor, and so forth. And the question arises, whether we can determine which of these types is most reasonable. In the construction of the bow, we may suppose that, from rude beginnings, through discovery of better and better forms as adapted to ends in view in its construction, a form of bow would finally be reached which would represent the maximum of efficiency. This bow may be called the typical bow. As exquisitely adapted to its purpose, it arouses in us aesthetic satisfaction. Like the bow, every organism represents the solution of a problem, as well as a set of data for a new problem. As the bow is felt out, so the animal is always feeling itself out. The problem which it solves is how to hold its own against the surrounding pressure and the active competition of innumerable rivals. Though we cannot apply an _a priori_ method, cannot define the materials of which men are made or the end which they have to fulfil, we can determine to some extent their typical excellence. Recognizing the general nature of the great problem which is being worked out, we can discover what is implied in some of the results. The process of evolution must be, at every moment, a process of discovering a maximum of efficiency; though the conditions are always varying slowly, and an absolute maximum is inconceivable. At every point of the process, there is a certain determinate direction along which development must take place. The form which represents this direction is the typical form, any deviation from which is a defect. It is conceivable that the highest efficiency in different departments of conduct may imply consistent conditions. The greatest philosopher may also be the greatest athlete and the greatest poet. It is equally clear that there is no necessary connection. What, then, is the relative value of different kinds of efficiency? A complete