Milton imitated the models, like any other neo-classicist, but his imitation was not, in Joubert’s phrase, that of one book by another book, but of one soul by another soul. His decorum is therefore imaginative; and it is the privilege of the imagination to give the sense of spaciousness and infinitude. On the other hand, the unimaginative way in which many of the neo-classicists held their main tenets--nature, imitation, probability, decorum--narrowed unduly the scope of the human spirit and appeared to close the gates of the future. “Art and diligence have now done their best,” says Dr. Johnson of the versification of Pope, “and what shall be added will be the effort of tedious toil and needless curiosity.” Nothing is more perilous than thus to seem to confine man in some pinfold; there is something in him that refuses to acquiesce in any position as final; he is in Nietzsche’s phrase the being who must always surpass himself. The attempt to oppose external and mechanical barriers to the freedom of the spirit will create in the long run an atmosphere of stuffiness and smugness, and nothing is more intolerable than smugness. Men were guillotined in the French Revolution, as Bagehot suggests, simply because either they or their ancestors had been smug. Inert acceptance of tradition and routine will be met sooner or later by the cry of Faust: _Hinaus ins Freie!_ Before considering the value of the method chosen by Rousseau and the romanticists for breaking up the “tiresome old heavens” and escaping from smugness and stuffiness, one should note that the lack of originality and genius which they lamented in the eighteenth century--especially in that part of it known as the Enlightenment--was not due entirely to pseudo-classic formalism. At least two other main currents entered into the Enlightenment: first the empirical and utilitarian current that goes back to Francis Bacon, and some would say to Roger Bacon; and secondly the rationalistic current that goes back to Descartes. English empiricism gained international vogue in the philosophy of Locke, and Locke denies any supersensuous element in human nature to which one may have access with the aid of the imagination or in any other way. Locke’s method of precise naturalistic observation is in itself legitimate; for man is plainly subject to the natural law. What is not truly empirical is to bring the whole of human nature under this law. One can do this only by piecing out precise observation and experiment with dogmatic rationalism. One side of Locke may therefore be properly associated with the father of modern rationalists, Descartes. The attempt of the rationalist to lock up life in some set of formulæ produces in the imaginative man a feeling of oppression. He gasps for light and air. The very tracing of cause and effect and in general the use of the analytical faculties--and this is to fly to the opposite extreme--came to be condemned by the romanticists as inimical to the imagination.