"The past is not dead; it is not even past."
The worst thing in the world that can happen to you if you’re an engineer that has given his life to something is for someone to rip it off and put their name on it.
You cannot always control what goes on outside. But you can always control what goes on inside.
创新是能源行业的命脉；没有它，我们就会停滞不前。
A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.