数学不知道种族或地理界限；对于数学来说，文化世界是一个国家。
Profit should never come at the expense of the planet.
"The past is a shadow that follows us, but it is also a light that guides us."
生命可以归结为一种简单的选择：要么忙于生存，要么赶着去死。
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
When you find everything you looked forI hope your life leads you back to my front door.Oh but if it don't，stay beautiful.