But in truth the reader will infer that, if the selection includes the best pieces, the journal may well have died from congenital weakness. The Dunciad was yet to go through a transformation, and to lead to a new quarrel; and though this happened at a much later period, it will be most convenient to complete the story here. Pope had formed an alliance with Warburton, of which I shall presently have to speak; and it was under Warburton's influence that he resolved to add a fourth book to the Dunciad. This supplement seems to have been really made up of fragments provided for another scheme. The Essay on Man--to be presently mentioned--was to be followed by a kind of poetical essay upon the nature and limits of the human understanding, and a satire upon the misapplication of the serious faculties.[13] It was a design manifestly beyond the author's powers; and even the fragment which is turned into the fourth book of the Dunciad takes him plainly out of his depth. He was no philosopher, and therefore an incompetent assailant of the abuses of philosophy. The fourth book consists chiefly of ridicule upon pedagogues who teach words instead of things; upon the unlucky "virtuosos" who care for old medals, plants, and butterflies--pursuits which afforded an unceasing supply of ridicule to the essayists of the time; a denunciation of the corruption of modern youth, who learn nothing but new forms of vice in the grand tour; and a fresh assault upon Toland, Tindal, and other freethinkers of the day. There were some passages marked by Pope's usual dexterity, but the whole is awkwardly constructed, and has no very intelligible connexion with the first part. It was highly admired at the time, and, amongst others, by Gray. He specially praises a passage which has often been quoted as representing Pope's highest achievement in his art. At the conclusion the goddess Dulness yawns, and a blight falls upon art, science, and philosophy. I quote the lines, which Pope himself could not repeat without emotion, and which have received the highest eulogies from Johnson and Thackeray.