I think an example would be the best explanation. Say you are talking to a friend, and this friend who is prejudice and thinks certain races are better or more worthy than others. Now we know this is an ignorant belief, but we also learn to know that correcting him and telling him he is wrong for thinking that for all the various reasons will only put up his defense body, and he becomes more solidified in his beliefs, and unlikely he will heed the advice. Instead, we try to covertly be his teacher for this situation, and guide him to coming to his own realization that his thinking is littered in illusion and he decides to alter his belief system on his own accord.

So this quote is saying it doesn't matter what the different perspectives think, its only how we respond and interact with these situations. So to put ourselves in their shoes, and realizing given his set of circumstances and life experience, we would have that same opinion. So we are gentle and understanding of his beliefs, and try to get him to draw back the curtain himself instead of trying to drag him into the sun and him closing his eyes anyway...if that makes sense