最可持续的资源是人类的智慧。
The most sustainable resource is human ingenuity.
幸福只是将灵魂从不幸福的动荡中解放出来。
The essence of strategy is in the activities – choosing to perform activities differently or to perform different activities than rivals.
我不是环境的产物。我的环境是我的产物。
The most important thing in mathematics is to understand the concepts, not just to memorize formulas.