Your past does not define your future.

追求数学知识是一段永无止境的旅程。

I do not know much about it, but I think some of America's best young men served in this war.

我不认为你能做到最好。做到最好是一个努力做到最好的过程。

所有伟大的艺术和文学都是宣传。