The more I learn, the more I realize how much I don’t know.

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

It is indeed an opinion strangely prevailing amongst men， that houses， mountains， rivers， and in a word all sensible objects， have an existence， natural or real， distinct from their being perceived by the understanding.

我总是努力保持积极，战斗到最后，继续奔跑，继续战斗。

质量不是权利；它是一种特权。

每一次发现都是向理解宇宙迈近的一步。

如果你想改变世界，先从改变思维方式开始。