我最喜欢的生活中的事情不花钱。很明显,我们所有人最宝贵的资源是时间。
My favorite things in life don’t cost any money.It’s really clear that the most precious resource we all have is time.
In the end, all we have are words.
最简单的材料可以包含最复杂的意义。
Challenges are what make us grow; embrace them with courage and determination.
一个好的数学问题的定义是它产生的数学,而不是问题本身。
你遇到的每个人都在经历一场你看不见的战斗。请善良以待。
The only certainty is uncertainty.