管理复杂性的关键在于关注组件之间的接口,而不是它们的实现。
The essence of mathematics lies in its freedom.
你是自己人生故事的作者。
The past is a foreign country; they do things differently there.
Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work.