Making something variable is easy. Controlling duration of constancy is the trick.
In times of change, the learners inherit the earth, while the learned find themselves beautifully equipped to deal with a world that no longer exists.《Steel and Strategy》
解释:神态傲慢,谁还愿意和你相处呢?最洁白的东西好像十分黑暗,最道德的人好像有所不足。