The inequality of the essay—the fitful succession of limp and acute observations—can be explained only by ill-matched collaboration. Warburton has himself indicated the extent of Theobald’s debt to him. In his own copy of Theobald’s Shakespeare he marked the passages which he had contributed to the Preface, as well as the notes “which Theobald deprived him of and made his own,” and the volume is now in the Capell collection in Trinity College, Cambridge. Mr. Churton Collins, in his attempt to prove Theobald the greatest of Shakespearean editors, has said that “if in this copy, which we have not had the opportunity of inspecting, Warburton has laid claim to more than Theobald has assigned to him, we believe him to be guilty of dishonesty even more detestable than that of which the proofs are, as we have shown, indisputable.”(33) An inspection of the Cambridge volume is not necessary to show that a passage in the Preface has been conveyed from one of Warburton’s letters published by Nichols and by Malone. Any defence of Theobald by an absolute refusal to believe Warburton’s word can be of no value unless some proof be adduced that Warburton was here untruthful, and it is peculiarly inept when Theobald’s own page proclaims the theft. We know that Theobald asked Warburton for assistance in the Preface, and gave warning that such assistance would not be acknowledged. Warburton could have had no evil motive in marking those passages in his _private_ copy; and there is surely a strong presumption in favour of a man who deliberately goes over seven volumes, carefully indicating the material which he considered his own. It happens that one of the passages contains an unfriendly allusion to Pope. If Warburton meant to be “dishonest”—and there could be no purpose in being dishonest before he was Theobald’s enemy—why did he not disclaim this allusion some years later? The simple explanation is that he marked the passages for his own amusement while he was still on friendly terms with Theobald. They are thirteen in number, and they vary in length from a few lines to two pages. Four of them are undoubtedly his, and there is nothing to disprove that the other nine are his also.(34)