Thus the problem of discovering the state is not a problem for theoretical inquirers engaged solely in surveying institutions which already exist. It is a practical problem of human beings living in association with one another, of mankind generically. It is a complex problem. It demands power to perceive and recognize the consequences of the behavior of individuals joined in groups and to trace them to their source and origin. It involves selection of persons to serve as representatives of the interests created by these perceived consequences and to define the functions which they shall possess and employ. It requires institution of a government such that those having the renown and power which goes with the exercise of these functions shall employ them for the public and not turn them to their own private benefit. It is no cause for wonder, then, that states have been many, not only in number but in type and kind. For there have been countless forms of joint activity with correspondingly diverse consequences. Power to detect consequences has varied especially with the instrumentalities of knowledge at hand. Rulers have been selected on all kinds of different grounds. Their functions have varied and so have their will and zeal to represent common interests. Only the exigencies of a rigid philosophy can lead us to suppose that there is some one form or idea of The State which these protean historic states have realized in various degrees of perfection. The only statement which can be made is a purely formal one: the state is the organization of the public effected through officials for the protection of the interests shared by its members. But what the public may be, what the officials are, how adequately they perform their function, are things we have to go to history to discover.