Sustainability is not an option; it's a necessity for the future of our industry.
数学是一种让我们能够描述无法描述的事物的语言。
我不让恐惧控制我,我让它挑战我。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
History is not the past. It is the method we have evolved of organizing our ignorance of the past.