The most advanced machinery means nothing without skilled hands to guide it.

I don't do things for the reaction or the credit. I do things because they're what I want to do.

When you do something best in life, you don’t really want to give that up – and for me it’s tennis.

当一种编程语言的程序需要关注无关的细节时，它就是低级的。

可持续发展不是一种选择，而是我们对后代的责任。