数学的美在于它是永恒的,它不会改变。
The beauty of mathematics is that it is eternal, it doesn't change.
That is the outstanding answer I've ever heard.
Sucess is a lousy teacher.It seduces smart people into thinking they can't lose.
伟大的领导者倾听多于发言,行动多于计划。
全人类...都是平等和独立的,任何人都不应伤害他人的生命、健康、自由或财产。