If we want to protect forests, we must first understand them.

A person may cause evil to others not only by his actions but by his inaction， and in either case， he is justly accountable to them for the injury.

La belleza no es un lujo, sino una necesidad del alma.

我不是传奇，我只是一个人。

In a time of universal deceit, telling the truth is a revolutionary act.

客人来了，主人不去招呼，他可能是个不知事理的傻子。

数学是一门活生生的学科，随着新思想的出现而不断发展。

It's not always about winning. It's about learning and getting better.

真理的概念与自由的概念不可分割。

世界拥有技术 - 无论是现有的还是研究中的 - 可以在可持续的基础上养活100亿人口。