这句话怎么理解？

Question

这是奥巴马一次演讲中提到的，是一个中学开学典礼的演讲。

But at the end of the day, we can have the most dedicated teachers, the most supportive parents, the best schools in the world -- and none of it will make a difference, none of it will matter unless all of you fulfill your responsibilities, unless you show up to those schools, unless you pay attention to those teachers, unless you listen to your parents and grandparents and other adults and put in the hard work it takes to succeed.

这里，and none of it will make a difference, none of it will matter
怎么理解呢？
谢谢先

Answer 1

如果。。。。
则这些并不会造成什么不同，这些也都没有任何意义。
除非你去关注下这些学校。。。

这些政治家很扯的，你每次都觉得他像在回答问题，其实大部分时候他什么有意义的东西都没说。本回答被提问者采纳