With all the great heritage and with all the valuable contributions, the idea of world community had remained essentially still in the stage of dreams, before the advent of the modernity, insofar as its actual realization in practice was concerned. It is only in the modern era that the idea of world citizenship began taking shape as vision, not merely dreams. First of all, there is the physical factors to be taken into consideration. It is only with the beginning of the modern age that the world came geographically to be known to mankind as it is, largely due to the activities of the Europeans in pursuit of their ideas, ambitions, illusions, interests, etc. Secondly, there is the great political achievement of the modern age, namely the nation state which, in my opinion, has not only compelled us by dint of the practical problems it raised to think of the necessity of a world community but also opened our eyes to its practical possibility as well as to its concrete contents. The third of the elements of modernity that support our vision of the community of mankind is the human liberation as both an idea and a powerful trend in practice. The essence of modern mind consists in not taking anything in the environments as given, whether it is social system, political institutions, or natural conditions. It views them basically with an eye of reformulation, or adapting them to human needs an essentially experimental attitude. Finally, perhaps the most powerful factor that makes up the vision of a community of work citizens is a phenomenon, both peculiar and indispensable in the modernity, i.e., what may be called the `universalization of experiences`, due to which, the area of common experiences among mankind are ever widening in the present era, and even the peculiarities in the experiences of particular people are increasingly being made more understandable to others in terms of common experiences. Without refuting some of the existing programs for world polity as either unrealistic or premature, I will venture below to outline an approach to a new political arrangement. First of all, The formation of world citizenry would not and should not take place in the some way as it did in the modern states, the state being formed by a prince or by a group of state builders and the people integrated into and educated as the citizen of it. If anything, it would take the course of the world citizenry being formed by the widespread political consciousness among the people disseminated over the wide areas of the world, and then the world state or a political community of the world coming into existence as a kind its natural consequence. Secondly, it is doubtful if a future world community would be fashioned after the sovereign modern state with a centralized political authority, although I do not believe that it would be able to do, like any other community of men, without a certain power structure, i.e. the arrangements for political authority or authorities. These considerations load us to the third, and perhaps the most important, point in thinking about the future that is, we have to start building up the common society of mankind from the grass roots, from ourselves. Without a prince who could be trusted with the task of establishing and maintaining the political community, we have to build it by and among ourselves, through and in our consciousness first. Berlrand Russel once remarked pessimistically regarding the possibility of having a world political community established on earth that it would be impossible unless the whole world come under that kind of threat coming not from the space invaders but from our own failure to devise a way of living together. It is about time now that we should start correcting the failure.