Utilise Slips. That is how smart people get out of difficulties. They extricate themselves from the most intricate labyrinth by some witty application of a bright remark. They get out of a serious contention by an airy nothing or by raising a smile. Most of the great leaders are well grounded in this art. When you have to refuse, it is often the polite way to talk of something else. Sometimes it proves the highest understanding not to understand.