每一个巨大而深刻的困难本身都包含着它的解决方案。它迫使我们改变思维以找到解决方案。

The competition of enterprises is, in the final analysis, the competition of talents.

生活是世界上最罕见的事情。大多数人只是存在，仅此而已。

心理学是精神生活的科学，而不仅仅是其元素的分类。

The function of entrepreneurs is to reform or revolutionize the pattern of production by exploiting an invention or, more generally, an untried technological possibility for producing a new commodity or producing an old one in a new way.