If we are courageously to meet and successfully to overcome the dangers with which our civilization is threatened, it is clear that we need _more mind_ than ever before. It is also clear that we can have indefinitely more mind than we already have if we but honestly desire it and avail ourselves of resources already at hand. Mind, as previously defined, is our "conscious knowledge and intelligence, what we know and our attitude toward it--our disposition to increase our information, classify it, criticize it, and apply it". _It is obvious that in this sense the mind is a matter of accumulation and that it has been in the making ever since man took his first step in civilization._ I have tried to suggest the manner in which man's long history illuminates our plight and casts light on the path to be followed. And history is beginning to take account of the knowledge of man's nature and origin contributed by the biologist and the anthropologist and the newer psychologists. Few people realize the hopeful revolution that is already beginning to influence the aims and methods of all these sciences of man. No previous generation of thinkers has been so humble on the whole as is that of to-day, so ready to avow their ignorance and to recognize the tendency of each new discovery to reveal further complexities in the problem. On the other hand, we are justified in feeling that at last we have the chance to start afresh. We are freer than any previous age from the various prepossessions and prejudices which we now see hampered the so-called "free" thinking of the eighteenth century. The standards and mood of natural science are having an increasing influence in stimulating eager research into human nature, beliefs, and institutions. With Bacon's recommendations of the study of common _things_ the human mind entered a new stage of development. Now that historic forces have brought the common _man_ to the fore, we are submitting him to scientific study and gaining thereby that elementary knowledge of his nature which needs to be vastly increased and spread abroad, since it can form the only possible basis for a successful and real democracy.