Innovation is at the heart of what we do; without it, we wouldn't be where we are today.
创新是我们所做一切的核心；没有它，我们就不会有今天的成就。
Every book is a journey, and every journey is a book.
"The world is full of small things that are big enough to break your heart."
劳动经济学从根本上讲是理解人们的选择和约束。