In this controversy, although not yet a Catholic, he showed the gulf between the Modernist theory of development and the Newman doctrine, with a clarity greater than any Catholic writer of the time.
A man who is always going back and picking to pieces his own first principles may be having an amusing time but he is not developing as Newman understood development. Newman meant that if you wanted a tree to grow you must plant it finally in some definite spot. It may be (I do not know and I do not care) that Catholic Christianity is just now passing through one of its numberless periods of undue repression and silence. But I do know this, that when the great Powers break forth again, the new epics and the new arts, they will break out on the ancient and living tree. They cannot break out upon the little shrubs that you are always pulling up by the roots to see if they are growing.
Against R. J. Campbell he showed in a lecture on "Christianity and Social Reform" how belief in sin as well as in goodness was more favourable to social reform than was the rather woolly optimism that refused to recognize evil. "The nigger-driver will be delighted to hear that God is immanent in him. . . . The sweater that . . . he has not in any way become divided from the supreme perfection of the universe." If the New Theology would not lead to social reform, the social Utopia to which the philosophy of Wells and of Shaw was pointing seemed to Chesterton not a heaven on earth to be desired, but a kind of final hell to be avoided, since it banished all freedom and human responsibility. Arguing with them was again highly fruitful, and two subjects he chose for speeches are suggestive--"The Terror of Tendencies" and "Shall We Abolish the Inevitable?"
In the _New Age_ Shaw wrote about Belloc and Chesterton and so did Wells, while Chesterton wrote about Wells and Shaw, till the Philistines grew angry, called it self-advertisement and log-rolling and urged that a Bill for the abolition of Shaw and Chesterton should be introduced into Parliament. But G.K. had no need for advertisement of himself or his ideas just then: he had a platform, he had an eager audience. Every week he wrote in the _Illustrated London News_, beginning in 1905 to do "Our Notebook" (this continued till his death in 1936). He was still writing every Saturday in the _Daily News_. Publishers were disputing for each of his books. Yet he rushed into every religious controversy that was going on, because thereby he could clarify and develop his ideas.