数学的本质在于它的自由。
In this trifling affair， that misunderstandings and neglect occasion more mischief in the world than even malice and wickedness. At all events， the two latter are of less frequent occurrence.
可持续发展不仅是责任，更是企业长远发展的基石。
You build your life around what you fear, and then you spend your life being afraid.
The world is everything that is the case.
The only thing I can say is that I try to be humble all the time.
大国总是在寻找机会以牺牲对手为代价来获得权力，并主导体系。