In looking for someone to hire, you look for three qualities: integrity, intelligence, and energy. But the most important is integrity because if they don't have that, the other two qualities, intelligence and energy, are going to kill you.
保持饥饿，保持愚蠢，但也要保持专注。
Tennis is a brutal sport. There is no place to hide out there.
The only thing we have to fear is fear itself.