This lack of attribution was totally inadvertent and due to carelessness on my part. It in no way reflects on my publishers, Faber and Faber, and I take full responsibility. When downloading material from the internet as part of my research, and coming back to it after a gap of maybe weeks or sometimes months, I simply did not recall that I had not written these passages myself. It is my sincere hope that no damage was done to any individual by the inclusion of any of these passages.
Prof. Lewis Wolpert made an easy mistake, but his excuse probably wouldn’t be accepted by an exam board. All the copies of the book involved will be taken from the shelves.