我们必须将土壤健康视为粮食安全的基础。

The highest activity a human being can attain is learning for understanding because to understand is to be free.

我不把任何事视为理所当然，我通过努力获得一切成就。

整个有机体最复杂的反射就是所谓的本能。

真相很少是纯粹的，也从不简单。