森林是地球的肺，我们必须给予它们应有的关怀。

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

Economics is the study of how societies use scarce resources to produce valuable goods and services and distribute them among different individuals. If we think about the definitions, we find two key ideas that run through all of economics:

"Der Mensch ist der Hirt des Seins."

你的大脑比你想象的更强大，关键在于如何激活它。

一个组织的激情质量决定了其卓越的质量。