演講摘要 : Human generations are interrelated and ought to be examined as an integrated whole. From the holistic viewpoint of overlapping societies, the costs incurred in each generation for using knowledge decrease and the benefits generated in each generation from employing knowledge increase. The present generations, indeed, have to recognize that they are very fortunate. To maintain a sustainable society with efficient use of resources, it is required that a more equitable distribution of wealth be achieved. This type of question, however, continues to be ignored and remains unanswered in both the Austrian analysis of the knowledge problem and the mainstream exposition of the knowledge economy. To date, the real knowledge economy for carrying out a sustainable society has not yet come. Thus, we had better rid ourselves of growthmania and strive for a new knowledge economy from the perspective of a sustainable future. Once it is arrived at in the future, it will give rise to a knowledgeable milieu or niche for developing John Stuart Mill’s stationary state, an exposition unequivocally consistent with the contemporary analysis of sustainable development.