All men have the stars， but they are not the same things for different people。 For some， who are travelers， the stars are guides。 For others they are no more than little lights in the sky。 For others， who are scholars， they are problems。 For my businessman they were wealth。 But all these stars are silent。 You – you alone – will have the stars as no one else has them.

Leadership is not about being in charge. It's about taking care of those in your charge.

"The challenge in theoretical computer science is not just to solve problems, but to understand why they are hard to solve."

我们都是一门手艺的学徒，没有人能成为大师。