The anarchic nature of the international system means that states must rely on self-help to ensure their survival.

The power of science lies in its universality and objectivity, it transcends culture and national boundaries.

Continuous effort - not strength or intelligence - is the key to unlocking our potential.

华德福方法的核心是教育是一门艺术——它必须与孩子的经验对话。要教育整个孩子，必须触及他的心灵和意志，以及头脑。

唯一真正的优雅在于思想；如果你拥有它，其余的一切都源于此。

I'm just a kid who's four, each day I grow some more.

Chainsaws don't destroy forests—short-term thinking does.

大萧条是二十世纪的决定性宏观经济事件，它引发了对宏观经济理论和政策的根本性重新思考。

我试图通过我的作品来揭示人类的复杂性。