Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.

Sustainable forestry is not just about cutting trees; it's about ensuring the future of our planet.

"The world is full of obvious things which nobody by any chance ever observes."

学习的唯一途径就是生活。

浪费是设计缺陷，而非水产养殖的必然。

在科学中最重要的不是解决问题，而是提出正确的问题。

The mind is not a mirror of the world, but an instrument for dealing with it.

灵魂是意识多样性的统一。

我这一代人最伟大的发现是，一个人可以通过改变态度来改变他的生活。