"Mankind, ever since there have been civilized communities have been confronted with problems of two different kinds. On the one hand there has been the problem of mastering natural forces, of acquiring the knowledge and the skill required to produce tools and weapons and to encourage Nature in the production of useful animals and plants. This problem, in the modern world, is dealt with by science and scientific technique, and experience has shown that in order to deal with it adequately it is necessary to train a large number of rather narrow specialists. But there is a second problem, less precise, and by some mistakenly regarded as unimportant – I mean the problem of how best to utilize our command over the forces of nature. This includes such burning issues as democracy versus dictatorship, capitalism versus socialism, international government versus international anarchy, free speculation versus authoritarian dogma. On such issues the laboratory can give no decisive guidance. The kind of knowledge that gives most help in solving such problems is a wide survey of human life, in the past as well as in the present, and an appreciation of the sources of misery or contentment as they appear in history."