If you argue and rankle and contradict, you may achieve a victory sometimes; but it will be an empty victory because you will never get your opponent's good will.
Dale CarnegieIf you disagree with them you may be tempted to interrupt. But don't. It is dangerous. They won't pay attention to you while they still have a lot of ideas of their own crying for expression. So listen patiently and with an open mind.
Dale CarnegieIt was this desire for a feeling of importance that led an uneducated, poverty-stricken grocery clerk to study some law books he found in the bottom of a barrel of household plunder that he had bought for fifty cents. You have probably heard of this grocery clerk. His name was Lincoln.
Dale Carnegie