Philosophy, however, claimed most of his energies. The campaign begun in answer to the incursion of Mr. Lilly was continued in the article "Science and Pseudo-Scientific Realism" ("Collected Essays" 5 59-89) which appeared in the "Nineteenth Century" for February 1887. The text for this discourse was the report of a sermon by Canon Liddon, in which that eminent preacher spoke of catastrophes as the antithesis of physical law, yet possible inasmuch as a "lower law" may be "suspended" by the "intervention of a higher," a mode of reasoning which he applied to the possibility of miracles such as that of Cana. The man of science was up in arms against this incarnation of abstract terms, and offered a solemn protest against that modern recrudescence of ancient realism which speaks of "laws of nature" as though they were independent entities, agents, and efficient causes of that which happens, instead of simply our name for observed successions of facts. Carefully as all personalities had been avoided in this article, it called forth a lively reply from the Duke of Argyll, rebuking him for venturing to criticise the preacher, whose name was now brought forward for the first time, and raising a number of other questions, philosophical, geological, and biological, to which Huxley rejoined with some selections from the authentic history of these points in "Science and Pseudo-Science" ("Nineteenth Century" April 1887, "Collected Essays" 5 90-125). Moreover, judging from the vivacity of the duke's reply that some of the shafts of the first article must have struck nearer home than the pulpit of St. Paul's, he was induced to read "The Reign of Law," the second chapter of which, dealing with the nature of "Law," he now criticised sharply as] "a sort of 'summa' of pseudo-scientific philosophy," [with its confusions of law and necessity, law and force,] "law in the sense, not merely of a rule, but of a cause." [(Cf. his treatment of the subject 24 years before, volume 1.) He wound up with some banter upon the Duke's picture of a scientific Reign of Terror, whereby, it seemed, all men of science were compelled to accept the Darwinian faith, and against which Huxley himself was preparing to rebel, as if:--] Forsooth, I am supposed to be waiting for the signal of "revolt," which some fiery spirits among these young men are to raise before I dare express my real opinions concerning questions about which we older men had to fight in the teeth of fierce public opposition and obloquy--of something which might almost justify even the grandiloquent epithet of a Reign of Terror--before our excellent successors had left school.