The essence of mathematics is not to make simple things complicated, but to make complicated things simple.

The soul's joy lies in doing.

改变你的思想，你就能改变你的世界。

Always look for the positive in every situation. There is always something to be grateful for.

沙漠之美，在于人们意识到在它其中的某地，隐藏着一口水井，一泓清泉。

成功的关键是走进商店，倾听员工们要说的话。