There is only one excuse for a speaker's asking the attention of his audience: he must have either truth or entertainment for them.
Dale CarnegieWhen I asked him -Mr.Henry Ford- if he ever worried, he replied: "No. I believe God is managing affairs and that He doesn't need any advice from me. With God in charge, I believe that every-thing will work out for the best in the end. So what is there to worry about?
Dale CarnegieCriticism of others is futile and if you indulge in it often you should be warned that it can be fatal to your career.
Dale CarnegieWhy prove to a man he is wrong? Is that going to make him like you? Why not let him save face? He didn't ask for your opinion. He didn't want it. Why argue with him? You can't win an argument, because if you lose, you lose it; and if you win it, you lose it. Why? You will feel fine. But what about him? You have made him feel inferior, you hurt his pride, insult his intelligence, his judgment, and his self-respect, and he'll resent your triumph. That will make him strike back, but it will never make him want to change his mind. A man convinced against his will is of the same opinion still.
Dale Carnegie