I think the reason lay partly in his idea of immortality…

““I think the reason lay partly in his idea of immortality, but I think too it belonged to his war against the Inland Revenue. He was a great believer in delaying tactics. “Never answer all their questions,” he would say. “Make them write again. And be ambiguous. You can always decide what you mean later according to circumstances. The bigger the file the bigger the work. Personnel frequently change. A newcomer has to start looking at the file from the beginning. Office space is limited. In the end it’s easier for them to give in.” Sometimes, if the inspector was pressing very hard, he told me that it was time to fling in a reference to a non-existing letter. He would write sharply, “You seem to have paid no attention to my letter of April 6, 1963.” A whole month might pass before the inspector admitted he could find no trace of it. Mr Pottifer would send in a carbon copy of the letter containing a reference which again the inspector would be unable to trace. If he was a newcomer to the district, of course he blamed his predecessor; otherwise, after a few years of Mr Pottifer, he was quite liable to have a nervous breakdown. I think when Mr Pottifer planned to carry on after death (of course there was no notice in the papers and the funeral was very quiet) he had these delaying tactics in mind. He didn’t think of the inconvenience to his clients, only of the inconvenience to the inspector.’ Aunt Augusta””

— Graham Greene