数学的本质在于它的自由。
"The essence of mathematics lies in its freedom."
Sustainable development is not a slogan, but a corporate responsibility that must be practiced.
承认规则是法律体系中的终极规则,它确定了有效法律的标准。
A man who dares to waste one hour of time has not discovered the value of life.  
我不是完美主义者,但我喜欢把事情做好。更重要的是,我感到一种无尽的学习、改进和进化的需求。