" Lily刚死的时候Dumbledore抓住机会说服Snape保护Harry:
You know how and why she died. Make sure it was not in vain. Help me protect Lily’s son.
而在PS结尾Dumbledore却是这样对Harry解释Snape保护他的原因的:
I do believe he (Snape) worked so hard to protect you this year because he felt that would make him and your father quits. Then he could go back to hating your father’s memory in peace… "
我觉得这两种说法并不矛盾啊,也许斯内普这两种想法都有。