There is one all-important law of human conduct. If we obey that law, we shall almost never get into trouble. In fact, that law, if obeyed, will bring us countless friends and constant happiness. But the very instant we break the law, we shall get into endless trouble. The law is this: Always make the other person feel important.
Dale CarnegieHow often we all have heard speakers begin by calling the attention of the audience to their lack of preparation or lack of ability. If you are not prepared, the audience will probably discover it without your assistance.
Dale Carnegie