Always respect another’s opinion and another’s point of view. Don’t start a quarrel at the slightest difference of opinion. He may be right and you may be wrong! Ponder over his argument, he might have had the advantage of knowing more about the subject, or you may be prejudiced either for or against; or he may not know as much as you do. Every instance of difference of opinion does not indicate personal hatred, remember. (GA, p. 129)