"Faced with a wilful woman armed with facts and figures, the intelligent question is how best to disarm her. Confronting her is easy; anyone can do that, and lose. Winning against her is the hard part. The best way is to approach her with an argument that is presented crisply and knowledgeably, then stick with it as she tries to find the weak spots. She is intolerant of intellectual slackness, of threadbare arguments and of poor advocacy. She enjoys a good, businesslike argument, provided it is based on solid facts. She always demands thorough research to back up cases, both her own and those of others; this is one of her strongest weapons in advancing her beliefs and objectives. The incautious Minister who fails to learn his Whitehall brief thoroughly will soon find that she has absorbed it in greater detail than he has – and that now she is using it against him. Politics and Government are very serious, professional business for her... Margaret Thatcher...prefers a good argument to a good joke."