Today is cruel, tomorrow is crueler, and the day after tomorrow is beautiful. But most people will die tomorrow night.
"You can't judge people by what they do with their lives. You can only judge them by how they treat you."
The most profound discoveries often come from the simplest observations.
The more you know, the more you realize you know nothing.
I don't like to talk too much, I prefer to let my racket talk.
你能给别人的最大礼物就是你的时间。