"The issue before Cabinet, Margaret said, was quite simply the restoration of the doctrine of collective Cabinet responsibility (not something of which she was at all times the most devoted adherent herself). To that end Michael would have to be gagged, by the requirement that he could say nothing on the issue without first clearing it with Robert Armstrong, the Cabinet Secretary. Michael objected that this was wholly impracticable, and that in any case collective Cabinet responsibility could scarcely apply since she had not permitted a proper collective discussion of the issue. He spoke quietly, and not at all aggressively, and sought to find some compromise arrangement. But Margaret was adamant. She could see that Michael was now isolated in the Cabinet. The general view of the colleagues was that Michael had become obsessed with the issue, and had lost all sense of proportion... She pressed home her advantage; whereupon Michael slammed his Cabinet folder shut, saying "If this is the way this Government is going to be conducted, I no longer wish to be part of it", picked the folder up and strode out of the room. It was the most dramatic moment in any Cabinet I have attended."