The issue has ended up like that of the gas bill put behind the clock on the mantelpiece. One might forget about it from time to time, but it is still there, and one day it will have to be paid. I should have declared my interest about Powell: he was a close friend, one of only two genuinely great men I have ever known, and he asked me to write his biography. I discussed these matters with him for years. He knew what was coming. His fault was that he sought to explain it in a way that required close attention and sophistication to understand.