人類的思維方式太簡單，要記住個體的千千萬萬的差異太困難了，就偷懶把人按階級劃分了。

來源: clothtiger 於 2017-01-31 14:02:09 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.