当你想要放弃的时候,想想你当初为什么坚持了这么久。
Truth is not found in the light, but in the shadows where we dare not look.
解释:人有知识,犹如树木有枝叶,树木有了枝叶,能带给人阴凉,人有了知识,就可以为人民做更多的事。
In mathematics, the art of proposing a question must be held of higher value than solving it.
Tomorrow will be better for as long as America keeps alive the ideals of freedom and a better life.