The world is full of people who have never, since childhood, met an open doorway with an open mind.
客人来了,主人不去招呼,他可能是个不知事理的傻子。
解读:有些人计较日常琐碎得失,却在人生关键抉择、长远规划上短视,因小失大,警示目光放长远,莫因小利误大局。