Never close your lips to those whom you have already opened your heart.

民主与其说是一种政府形式，不如说是一套原则。

Life is too short to live it twice, but literature gives us the chance to live thousands of times.

The man who is fit to work at any particular trade is unable to understand the science of that trade without the help and guidance of those who are working with him or over him.

我不相信运气，我相信准备。

Sustainability must be at the core of every stone we extract, or we extract nothing at all.