如果你想在数学上取得进步，你必须习惯于不舒服。
You have to be comfortable with being uncomfortable if you want to make progress in mathematics.
You don't need a perfect voice to move people; you just need to sing from the heart.
我们今天种下的每一棵树都是对明天的承诺。
引用俗语说明运势变化的无常性。
And America, too, is a delusion, the grandest one of all.