The world is a vast and lonely place. But it's also a place where you can find your own way.

在林业中，长远眼光不仅可取，而且必不可少。

I never buy a stock unless I understand the business.

The world is so large and so small at the same time.

The beauty of mathematics only shows itself to more patient followers.

指事物之间相互依存、相互制约的关系。