“It seems clear that when committing these crimes Sutcliffe’s mental state was disturbed, even if his responsibility for the crime was not diminished. This leads me to the conclusion that the requirements of retribution and general deterrence should be met by a term of years rather than a ruling that life should mean life. But plainly, given the number and brutality of these crimes, and their public consequences, the term should be one of exceptional length.”
“…in the end you may think the real question, and the one to be decisive about is;…Do we think it is more probable than not that whenever he killed he acted under a belief – a deluded belief – that he had a divine mission to kill prostitutes. If the answer to that question is yes, then you may think that his defence is made out…if you do not accept that, why then, you may think his defence clearly fails.”
“The psychiatrists all substantially agreed that in a case such as this, the diagnosis was necessarily based very largely, if not entirely, upon what the accused man had told them. Again there was a general consensus of opinion between the medical men that if the accused man really believed that what he was telling the doctors was true, namely that he was on a divinely inspired mission to kill prostitutes, then the diagnoses would be correct. There was also a consensus that if on the other hand what this man told them upon the more important features of the case was to his knowledge false and was a deliberate lie, then their diagnosis in its turn would be falsified.”
“The matter was thrashed out at great length before the jury and the jury came to the conclusion that …this man was probably not telling the truth to the doctors and accordingly their diagnosis was falsified, through no fault of theirs.”