The man who has accepted the universe of the mechanist or determinist is not always gloomy. But men in general felt the need of some relief from the deterministic obsession. Hence the success of the philosophy of Bergson and similar philosophies. The glorification of impulse (_élan vital_) that Bergson opposes to the mechanizing of life is in its main aspects, as I have already indicated, simply a return to the spontaneity of Rousseau. His plan of escape from deterministic science is at bottom very much like Rousseau’s plan of escape from the undue rationalism of the Enlightenment. As a result of these eighteenth-century influences, nature had, according to Carlyle, become a mere engine, a system of cogs and pulleys. He therefore hails Novalis as an “anti-mechanist,” a “deep man,” because of the way of deliverance that he teaches from this nightmare. “I owe him somewhat.” What Carlyle owed to Novalis many moderns have owed to Bergson, but it is not yet clear that either Novalis or Bergson are “deep men.” The mechanistic view of nature, whether held pessimistically or optimistically, involving as it does factors that are infinite and therefore beyond calculation, cannot furnish proofs that will satisfy the true positivist: he is inclined to dismiss it as a mere phantasmagoria of the intellect. The Rousseauistic view of nature, on the other hand, whether held optimistically or pessimistically, is even less capable of satisfying the standards of the positivist and must be dismissed as a mere phantasmagoria of the emotions. The fact is that we do not know and can never know what nature is in herself. The mysterious mother has shrouded herself from us in an impenetrable veil of illusion. But though we cannot know nature absolutely we can pick up a practical and piecemeal knowledge of nature not by dreaming but by doing. The man of action can within certain limits have his way with nature. Now the men who have acted during the past century have been the men of science and the utilitarians who have been turning to account the discoveries of science. The utilitarians have indeed derived such potent aid from science that they have been able to stamp their efforts on the very face of the landscape. The romanticists have not ceased to protest against this scientific utilizing of nature as a profanation. But inasmuch as these protests have come from men who have stood not for work but for revery they have for the most part been futile. This is not the least of the ironic contrasts that abound in this movement between the ideal and the real. No age ever grew so ecstatic over natural beauty as the nineteenth century, at the same time no age ever did so much to deface nature. No age ever so exalted the country over the town, and no age ever witnessed such a crowding into urban centres.