Sustainability isn't an option; it's a necessity for the future of our planet.

While you invent， don't select. While you sketch， don't inspect. While you write the first draft， don't reflect.

当我们谈论粮食安全时，我们实际上是在谈论国家安全。

哲学的功能是在作为阶级斗争理论武器的科学观念与代表阶级敌人的意识形态观念之间划清界限。

我是个战士，我相信积极和努力的力量。

The best way of learning about anything is by doing.

不作为的代价远大于行动的代价。