An untruth stated calmly doesn’t become true. A truth stated passionately doesn’t become false. This is at the heart of why most appeals to emotion are logical

An untruth stated calmly doesn’t become true. A truth stated passionately doesn’t become false. This is at the heart of why most appeals to emotion are logical fallacies. Having said that, people being emotional certainly goes a long way toward explaining why pleasant people are more likely to be listened to.