The supreme maxim of the ethical positivist is: By their fruits shall ye know them. If I object to a romantic philosophy it is because I do not like its fruits. I infer from its fruits that this philosophy has made a wrong use of illusion. “All those who took the romantic promises at their face value,” says Bourget, “rolled in abysses of despair and ennui.”[6] If any one still holds, as many of the older romanticists held, that it is a distinguished thing to roll in abysses of despair and ennui, he should read me no further. He will have no sympathy with my point of view. If any one, on the other hand, accepts my criterion but denies that Rousseauistic living has such fruits, it has been my aim so to accumulate evidence that he will be confronted with the task of refuting not a set of theories but a body of facts. My whole method, let me repeat, is experimental, or it might be less ambiguous to say if the word were a fortunate one, experiential. The illustrations I have given of any particular aspect of the movement are usually only a small fraction of those I have collected--themselves no doubt only a fraction of the illustrations that might be collected from printed sources. M. Maigron’s investigation[7] into the fruits of romantic living suggests the large additions that might be made to these printed sources from manuscript material. My method indeed is open in one respect to grave misunderstanding. From the fact that I am constantly citing passages from this or that author and condemning the tendency for which these passages stand, the reader will perhaps be led to infer a total condemnation of the authors so quoted. But the inference may be very incorrect. I am not trying to give rounded estimates of individuals--delightful and legitimate as that type of criticism is--but to trace main currents as a part of my search for a set of principles to oppose to naturalism. I call attention for example to the Rousseauistic and primitivistic elements in Wordsworth but do not assert that this is the whole truth about Wordsworth. One’s views as to the philosophical value of Rousseauism must, however, weigh heavily in a total judgment of Wordsworth. Criticism is such a difficult art because one must not only have principles but must apply them flexibly and intuitively. No one would accuse criticism at present of lacking flexibility. It has grown so flexible in fact as to become invertebrate. One of my reasons for practicing the present type of criticism, is the conviction that because of a lack of principles the type of criticism that aims at rounded estimates of individuals is rapidly ceasing to have any meaning.