These were the circumstances which chiefly governed Pope's selection of the P. T. forgeries. Had there been a single fabricated letter he would have hastened to name it, just as he specified in his preface to the quarto some fictitious letters which were not in the P. T. publication. The P. T. letters being authentic, he was afraid to disclaim in print particular letters which surviving persons might know to be his, and he could not venture to advance beyond the indirect statement that the octavo of 1737 "contained all the letters that were genuine from former impressions." Trusting that no one who could convict him would be at the trouble to collate the editions, he thought himself safe from exposure, and he could privately appeal, with little risk of detection, to the disclaimer on his title-page when he had merely to disown a letter in his individual intercourse with the Duchess of Marlborough or Young. He did not care to increase the hazard of discovery by repeating his title-page. He dropped it in the second edition of the octavo, and the assertion that he had printed "all the letters that are genuine from the former impressions" dwindled down to the assurance that "there is not one but is genuine."[123] The controversies on Pope's character have naturally drawn forth uncompromising language both from defenders and accusers. Those who believed him incapable of the acts imputed to him could but conclude that he was bitterly calumniated. Those who believed that the charges were true could but brand him with reprobation. The offences were not of a nature to be softened by apologies. De Quincey was in a lenient mood when he wrote his sketch of Pope's Life, and his more favourable impressions necessarily carried with them the conviction that the "disgraceful imputation" against Pope of having made Curll his tool and victim was "most assuredly unfounded."[124] Speaking, on another occasion, of Pope's attack on Hill and the Duke of Chandos, he says, "Evil is the day for a conscientious man when his sole resource for self-defence lies in a falsehood."[125] De Quincey was ignorant of the history of the letters, and he would have altered his opinion if he had known that Pope in self-defence had been prodigal of the falsehoods which are the last refuge of guilt.