If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet.
绥靖主义者是在喂鳄鱼----可最后鳄鱼也把他给吃了。
如今网络上到处都是免费的教育资源,真正稀缺的是对学习的渴望。
Science is the knowledge of consequences, and dependence of one fact upon another.