Take an object. Do something to it. Do something else to it.
Science is a way of thinking much more than it is a body of knowledge.
友情有时会产生超越语言的理解。
孔子说：“知道学习不如喜欢学习，喜欢学习不如以学习为快乐。”
每一个挑战都是伪装的机遇；你只需要去寻找它。