In the realm of mathematics, every problem is an opportunity to discover something new.
万物都存在于心中,心中充满道理,充塞宇宙的也无非是这个理。
It's not the tools you have faith in – tools are just tools – they work, or they don't work.It's people you have faith in or not.
我们唯一恐惧的,就是恐惧本身。