数学家的工作永无止境；总有新的问题要问，新的谜题要解。
A mathematician's work is never done; there are always new questions to ask and new mysteries to solve.
The cost of inaction is far greater than the cost of action.
剪辑的魔力在于看不见的过渡。
在中国要成功，你需要第一个规模化。