You might say that memory supplies us with a thousand motion-picture films showing what has happened in given sets of circumstances in the past. Now, when a new set of circumstances occurs the unintelligent mind picks out a film that shows something in common with it and, expecting a repetition of that film, guides its course accordingly. The intelligent mind, however, surveying many old films, is content with none of them, but by a creative synthesis imagines a new film answering more closely to the new situation, and foreshowing more nearly what will happen. It is a work of art, depicting what never was on sea or land, yet more like the truth than anything actually experienced. I conceive that no mechanical theory of intelligence can be other than illusive. It is essentially a process of dealing with the unknown, of discovery. After its operations have taken place they may, perhaps, be formulated; but they can be predicted in advance only by the parallel operation of another intelligence. Behavior which can be formulated in advance is not, in any high sense, intelligent. Even the intelligence, however, works by a tentative method; it has to feel its way. Its superiority lies in the fewness and effectiveness of its experiments. Our mental staging of what is about to happen is almost never completely true, but it approaches the truth, in proportion as we are intelligent, so that our action comes somewhere near success, and we can the more easily make the necessary corrections. Napoleon did not always foresee how military operations would work out, but his prevision was so much more nearly correct than that of other generals that his rapid and sure experiments led to almost certain victory. In a similar manner Darwin felt his way among observations and hypotheses, proving all things and holding fast what was good, going slowly but surely up a road where others could make no headway at all. It is the same, I believe, with composers, sculptors, painters, and poets: their occasionally rapid accomplishment is the fruit of a long discipline in trial and error. This selection and organization in the intelligent mind is also a participation in the social process. As the mental and the social are merely phases of the same life, this hardly needs proof, but an illustration will do no harm.