代数分析很快让我们忘记了研究的主要对象，因为它将我们的注意力集中在抽象的组合上，直到最后我们才回到最初的目标。

The most successful forestry companies will be those that put sustainability at the core of every decision.

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

挑战让商业变得有趣；克服挑战让它变得有价值。