深入做某件事的唯一方法就是努力工作。

购买旧书，它们的词与新词相同，也可以去图书馆。

I always say, "If you stay ready, you don't have to get ready."

The arithmetic of modular forms is a key to understanding the deeper mysteries of number theory.

The best things in life are the people we love, the places we've been, and the memories we've made along the way.