魔法部的表现是有原因的,大家不要着急
关于为什么格林德沃不教黑魔法防御术了:很简单,他嫌上课占用了他太多时间。
[注1] 这句话出处不详,但确实广为流传。算是约翰·穆勒(Bad men need nothing more to compass their ends, than that good men should look on and do nothing.)和埃德蒙·伯克(When bad men combine, the good must associate; else they will fall one by one, an unpitied sacrifice in a contemptible struggle.)的变体吧